Dog health: respiratory
Kennel Cough in Dogs: The Honking Cough, Boarding Kennels and When It Is Not Kennel Cough
Kennel cough is not one germ and the kennel is not where most dogs catch it. This page gives the honking cough as five authorities describe it, the differential that matters most in India (collapsing trachea, heart disease, distemper, a foreign body and a reverse sneeze), the only Indian study that has swabbed coughing dogs, what a chest film and an echo cost at two government hospitals, and an honest answer to every home-remedy question Google is asked.
Quick answer
Kennel cough in dogs is an infectious inflammation of the windpipe caused by several organisms at once rather than by one germ, which is why veterinarians call it canine infectious respiratory disease complex. Most uncomplicated cases are mild and self-limiting, easing over the first 5 days and clearing in 10 to 20 days. India's only published series swabbed 55 coughing dogs at Hisar and found Bordetella bronchiseptica in just 3 of them, so a honking cough is worth a diagnosis, not a home remedy.
This guide is general information for Indian pet owners and is not a diagnosis. Always consult a registered veterinarian near you before acting on anything you read here, and treat any sudden change in your pet's condition as urgent.
Signs of Kennel cough
The 10 signs to watch for are listed below. Any one of them is a reason to consult your nearby vet; none of them is a diagnosis.
- A sudden dry honking cough, often compared to a goose honk
- Coughing fits that end in retching or gagging, sometimes with froth
- A cough set off by gentle pressure on the throat or windpipe
- Coughing that worsens with exercise, excitement or a tight neck collar
- Sneezing, a runny nose or watery eyes, with or without a cough
- A dog that eats, plays and behaves normally between coughing fits
- Onset 5 to 10 days after boarding, a park or a clinic waiting room
- Severity easing over the first 5 days while coughing persists 10 to 20 days
- Fever, thick nasal discharge or a wet productive cough, meaning the lungs are involved
- Rapid or laboured breathing, refusal of food, or listlessness
Breeds on this site that document this condition
Kennel cough is about exposure rather than breeding, so no breed screening scheme, registry or DNA test grades a dog for it and the AVMA states plainly that all breeds and ages are susceptible. The three cards below are the only within-breed figures with real denominators that this site could open, and two of the three found no significant difference from the comparison population. The strongest evidence points the other way entirely: in the Dog Aging Project cohort mixed-breed dogs reported Bordetella or parainfluenza more often than purebred dogs, 719 of 13,923 against 558 of 13,618, which is 5.16 percent against 4.10 percent. Zero breed pages on this site name this condition with a within-breed rate, and no breed rate has been invented to fill the gap. What predicts risk is boarding, shelters, day care, grooming parlours, dog parks, transport and clinic waiting rooms.
India has one published series of coughing dogs and a PubMed literature two papers deep. Oropharyngeal swabs from 55 dogs with respiratory signs at Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, taken between January 2024 and January 2025, found 18 positive (32.7 percent) for at least one of three pathogens, with canine distemper virus in 17 of 55 and Bordetella bronchiseptica in only 3 of 55, while 37 dogs tested negative for all three and 19 of the 55 were fully vaccinated. A PubMed search on 23 September 2026 for kennel cough or Bordetella bronchiseptica in Indian dogs returned a count of 2, one of which is that assay and the other a horse study, against a passing control of 34 for canine parvovirus. No Indian statute requires the vaccine: kennel cough, Bordetella and parainfluenza appear zero times in the Dog Breeding and Marketing Rules 2017, which require only annual rabies vaccination at a breeding establishment. What does require it is the boarding kennel. Nobivac KC is sold in India by MSD Animal Health India, a private chain prices the shot from Rs 1,349, and the tests that separate this from a collapsing trachea or heart disease cost Rs 100 for a chest film and Rs 300 for an echocardiogram at Madras Veterinary College, Chennai.
What kennel cough is, and why it is a syndrome rather than one germ
Kennel cough is inflammation of the trachea caused by several infectious agents at once, which is why veterinarians now call it canine infectious respiratory disease complex. It is a mild, self-limiting disease in most dogs, but it may progress to bronchopneumonia in puppies or to chronic bronchitis in debilitated adult or aged dogs. Dogs of all ages can be affected, with puppies more prone to severe disease.
Naming one bacterium as the cause is the first thing most pages get wrong. The MSD Veterinary Manual lists Bordetella bronchiseptica, canine parainfluenza virus, canine adenovirus type 2 and canine influenza as the causes, with canine distemper virus less likely, and puts canine reoviruses, canine herpesvirus and canine adenovirus type 1 down as of questionable significance. The AVMA adds canine respiratory coronavirus, Mycoplasma species and Streptococcus equi subspecies zooepidemicus to the list, and says dogs can be infected by two or more of these organisms at the same time. Veterinary Partner puts it more bluntly still, that it would be unusual for only one agent to be involved.
The combination decides how bad it gets. The classical picture of an uncomplicated case is parainfluenza or adenovirus type 2 together with Bordetella bronchiseptica, while infections involving distemper virus, Mycoplasma species or canine influenza are more likely to progress to pneumonia. Co-infections with Bordetella bronchiseptica, parainfluenza and adenovirus type 2 are the most common grouping. That is why this page keeps saying complex rather than naming a bug: what your dog has is a mixture, and the mixture is what the vaccine can only partly cover.
Which agents a vaccine can touch, and which it cannot
Vaccination exists for five of the organisms and for none of the rest. Veterinary Partner lists the five as Bordetella bronchiseptica, canine adenovirus type 2, canine parainfluenza virus, canine distemper and canine influenza, and states that infections with other members of the kennel cough complex cannot be prevented. The AVMA marks the same split on its own organism list, starring parainfluenza, adenovirus type 2 and distemper as covered by standard vaccines and marking Bordetella bronchiseptica and canine influenza as needing an additional vaccine, with canine respiratory coronavirus, canine herpesvirus, Mycoplasma species and Streptococcus equi subspecies zooepidemicus carrying no star at all.
| Agent | What it is | Vaccine available |
|---|---|---|
| Bordetella bronchiseptica | A bacterium, and the one the extra vaccine is named after | Yes, as an additional non-core vaccine |
| Canine parainfluenza virus | A virus, usually bundled into the combination shot | Yes, in standard combination vaccines |
| Canine adenovirus type 2 | A virus, the second letter in most Indian combination shots | Yes, in standard combination vaccines |
| Canine distemper virus | A virus that can present as a cough and then become something far worse | Yes, as a core vaccine |
| Canine influenza virus, H3N2 and H3N8 | A virus reported in North America and southeast Asia | Yes, but the vaccines are currently available only in the USA |
| Canine respiratory coronavirus | A virus that spreads particularly well in multi-dog establishments | No |
| Canine herpesvirus 1 | A virus, mainly a problem in very young puppies | No vaccine against the respiratory syndrome |
| Mycoplasma species | Organisms that are neither virus nor ordinary bacterium | No |
| Streptococcus equi subspecies zooepidemicus | A bacterium, uncommon but a particular problem in kennels | No |
One number puts the vaccine question in proportion. The canine influenza vaccines are recommended for dogs likely to be exposed, and the WSAVA notes they are currently available only in the USA, so an Indian owner buying the kennel cough shot is covering two organisms out of nine, and the combination shot covers three more. That is not an argument against vaccinating. It is the reason a vaccinated dog can still cough, which is the single most common complaint on this subject and the reason the dog vaccination schedule for India is worth reading alongside this page rather than instead of it.
How Bordetella bronchiseptica actually does the damage
The bacterium disables the airway's own cleaning system. The healthy respiratory tract clears debris with the mucociliary escalator, a layer of hair-like cilia that beat through a watery mucus layer and push trapped material up towards the throat to be coughed up or swallowed. Bordetella bronchiseptica binds directly to those cilia and renders them unable to function within 3 hours of first contact, and it secretes substances that disable the immune cells that would normally consume and destroy bacteria. Without a working escalator, invading bacteria march down the airways unimpeded.
Seven things damage that escalator before any germ arrives, and four of them describe an ordinary Indian summer or an ordinary Indian move.
- Shipping stress, which is what a long train or road transfer is.
- Crowding stress, the state of a full boarding kennel, a shelter or a clinic waiting room.
- Heavy dust exposure, which is most Indian cities for most of the dry season.
- Cigarette smoke exposure, indoors, at the dog's breathing height.
- Cold temperature, which matters in a north Indian winter and not much elsewhere.
- Poor ventilation, the closed room with the fan off.
- The infectious agents themselves, each of which makes the next one easier.
The professional literature adds the Indian variable directly. Stress and extremes of ventilation, temperature and humidity apparently increase susceptibility to, and severity of, the disease. That single sentence is the closest any authority comes to saying a humid monsoon week in a poorly ventilated room is a risk factor, and it is the reason the monsoon care guide for dogs in India and this page belong together.
How kennel cough spreads, and why the word kennel in the name misleads
Kennel cough spreads through the air, on shared objects and on your hands, and a dog does not need to have been in a kennel to catch it. An infected dog sheds bacteria and viruses in respiratory secretions, those secretions become aerosolised and float in the air, and a healthy dog inhales them. Crowded housing and poor ventilation raise the odds, but organisms are also carried on toys, food bowls and other objects.
The European evidence says household dogs are not safer. Reviewing the European prevalence studies published between 2000 and 2019, Day and colleagues concluded that evidence of exposure to Bordetella bronchiseptica is frequently found in healthy and diseased dogs and that client-owned dogs are as likely to be infected as kennelled dogs. One German study went further and found, against expectations, that dogs from private households were significantly more likely to be infected with Bordetella bronchiseptica than dogs from shelters. An Indian owner whose dog has never boarded anywhere is not therefore exempt.
The timing is what lets you reconstruct where it came from. The incubation period is two to 14 days in Veterinary Partner's account, 2 to 10 days in Cornell's, and the MSD Veterinary Manual frames it as a characteristic cough that suddenly develops 5 to 10 days after exposure to other susceptible or affected dogs. Three sources, three overlapping windows, and the practical reading is that anything your dog met in the fortnight before the cough started is a candidate.
Contagious before the cough, and for months afterwards
A well-looking dog is the main way this spreads. Most dogs with this syndrome are contagious before they start showing signs, which is why the disease is difficult to control. Cornell adds that a mildly affected dog can look well while shedding heavily is a general feature of this group of infections, and the AVMA's own advice line is blunt, that dogs can be contagious and still look perfectly healthy. Some of the organisms are hardy enough to survive in the environment for weeks.
Shedding does not stop when the cough does. Infected dogs shed Bordetella organisms for one to three months following infection. Dogs that have recovered from Bordetella bronchiseptica are typically immune to reinfection for six to 12 months, which is a different clock entirely. Those two sentences together are the reason a recovered dog should not go straight back to a boarding kennel or a dog park, and no ranking page on the Indian query prints either of them.
Six ordinary Indian situations put a dog in front of this, and only one of them involves a kennel.
- A boarding kennel or a day care, the setting the disease is named after and where the illness spreads rapidly among dogs housed in close confinement.
- A veterinary hospital waiting room, which the same source lists in the same breath as kennels and boarding facilities.
- A grooming parlour, an obedience class or a vaccination camp, all named by Veterinary Partner as classic exposure settings.
- A local park, where a dog inhales droplets from a dog it never touched.
- A shared water bowl at a gate or a shop, a route the AVMA names alongside toys, bedding and people's hands.
- Your own hands and clothes, after you stroked a coughing dog on the street.
One correction matters for a country with a large free-ranging dog population. Veterinary Partner records that in reality most causes of coughing that begin acutely in dogs are due to infectious causes and usually represent some form of kennel cough. An acute cough that started this week in a dog that walks on Indian streets is far more likely to be this than anything exotic, and the honest counterweight to that is the next section, because a cough that has been going on for months is a different problem altogether.
Breed barely predicts this, and the data says so twice
Exposure predicts kennel cough; breeding mostly does not. The AVMA states that all breeds and ages are susceptible, and the largest owner-reported dataset agrees from an unexpected direction: in the Dog Aging Project cohort, 719 of 13,923 mixed-breed dogs had a reported Bordetella or parainfluenza episode against 558 of 13,618 purebred dogs, 5.16 percent against 4.10 percent. Mixed-breed dogs, in other words, reported it more often than pedigree dogs did.
Two breed signals do exist and they point opposite ways. UK primary-care records for 1,462 Labrador Retrievers and 20,786 other dogs put kennel cough among the breed's five strongest predispositions, with an odds ratio of 2.27 against non-Labradors, and the authors suggest the explanation is social rather than genetic, that a sociable breed kept as a family companion, service dog, guide dog or working gundog spends more time in contact with other dogs. The same VetCompass method applied to 2,510 English Cocker Spaniels found kennel cough in 17 of them against 76 of 7,813 other dogs, an odds ratio of 0.66 that did not reach significance. The Labrador paper itself notes that a study of Kennel Club registered breeds found no significant difference in within-breed kennel cough prevalence for Labrador Retrievers at all.
When it is not kennel cough: six other causes of coughing in dogs
To work out whether a honking cough is kennel cough, start with how long it has been going on and how big the dog is. Kennel cough arrives suddenly, 5 to 10 days after the dog met other dogs, and the dog otherwise feels active and normal. A honking cough in a small, middle-aged Indian house dog that has been building for months, with no exposure history, is far more likely to be a collapsing trachea, and the two conditions sound almost identical.
Tracheal collapse is the differential that matters most in India, because of which dogs Indians keep. Its victim is almost always a toy breed dog, with poodles, Yorkshire terriers and Pomeranians most commonly affected, and it usually becomes problematic in middle age. Cornell describes the same population, toy and small breed dogs such as Yorkshire Terriers, Pomeranians and Toy Poodles that are middle-aged or older. The most common sign is a persistent, harsh and dry cough sometimes described as a goose-honking cough, which is the same phrase the MSD Veterinary Manual uses for kennel cough.
Two clues separate them at home before any test. Kennel cough is an acute event with an exposure history and a dog that is otherwise well, while tracheal collapse is a progressive disease that gets worse over months and is set off by stress, excitement, physical activity, heat and humidity, inhaled irritants such as smoke, or pressure on the neck. Heat and humidity appear in that list and in no list on this page's kennel cough sources, which is why an Indian owner whose small dog honks most in May and least in December should be thinking about the trachea.
One breed carries most of the tracheal collapse in the world's case reports, and India keeps it. The MSD Veterinary Manual's respiratory overview records that Yorkshire terriers are one half to two thirds of reported cases, that the condition is rare in cats and in large or giant breeds, and that the trachea is characterised by weakened cartilage rings with dorsoventral flattening that restricts airflow. Its owner version adds the two conditions that make a quiet trachea noisy, that the condition occurs more frequently in dogs that are obese and in those with heart disease or another lung disease, especially chronic bronchitis. An overweight middle-aged Yorkshire Terrier with a honking cough is a tracheal collapse suspect before it is a kennel cough suspect.
The cruel part is that the two conditions feed each other. Many dogs with collapsed tracheas do not show symptoms until a second problem complicates matters, and the factors that bring out the symptoms are obesity, anaesthesia involving an endotracheal tube, development of kennel cough or another respiratory infection, increased respiratory irritants in the air, and heart enlargement pressing on the trachea. Veterinary Partner says the same thing from the other direction, that failure of kennel cough to resolve suggests an underlying condition and that kennel cough can activate a previously asymptomatic collapsing trachea.
| Cause | The dog it usually is | How the cough behaves | What a veterinarian does to tell |
|---|---|---|---|
| Kennel cough, canine infectious respiratory disease complex | Any age, any breed, with exposure to other dogs 5 to 10 days earlier | Sudden onset, dry and honking, worse on exercise, dog otherwise eats and plays normally | History plus examination, and the cough is easily induced by gentle palpation of the larynx or trachea; chest radiographs to exclude other causes |
| Tracheal collapse | Toy and small breeds, Pomeranian, Yorkshire Terrier, Poodle, middle-aged or older, often overweight | Chronic, progressive over months, goose-honking, triggered by excitement, heat, humidity and a tight collar | A cough is also easily elicited by palpating the throat, so X-rays, fluoroscopy or bronchoscopy are needed; X-rays can miss it because the trachea collapses only at one phase of breathing |
| Chronic bronchitis | Small breeds especially, often older | Coughing is always present and it is the most common cause of a chronic cough | Crackles in a small-breed dog that is coughing and is not in respiratory distress; radiographs and airway sampling |
| Heart disease with congestive heart failure | Any dog with a murmur, but a murmur alone proves nothing | Usually with laboured breathing and a raised sleeping respiratory rate rather than a clean cough | Echocardiography and radiographs; most dogs with a cough and a heart murmur are not in heart failure |
| Canine distemper | Unvaccinated dogs, above all puppies | Cough plus fever, discharge from both eyes and both nostrils, vomiting or diarrhoea, later nervous signs | RT-PCR and antibody tests; the cough is one part of a multisystemic illness |
| Reverse sneezing or a foreign body | Small dogs and brachycephalic dogs for reverse sneezing; any dog for an inhaled object | A reverse sneeze is sudden, episodic, sounds like the dog is inhaling sneezes, and stops on its own | Examination, and rhinoscopy with a biopsy if it becomes chronic |
The heart-disease trap, and the one line that settles it
A murmur is not a diagnosis of a cough. In all species cough is much more commonly associated with primary lung disease than with cardiogenic pulmonary oedema, and coughing is always present in dogs with chronic bronchitis, which is the most common cause of a chronic cough, especially in small breeds. Even in a smaller, old dog with a loud left apical systolic murmur, if difficult breathing is not present, a cough is most likely due to chronic bronchitis rather than to pulmonary oedema. Most dogs with a cough and a heart murmur are not in heart failure.
Two rules of thumb in that same source are worth carrying to the clinic. A cough improving on a diuretic does not prove heart failure, because furosemide is a bronchodilator and coughing will often decrease or resolve after it in dogs with chronic bronchitis. And heart failure is a progressive disease, so if a dog has had a cough for months without change and is not receiving that diuretic, the cough is very unlikely to be due to heart failure. Neither of those sentences appears on any page ranking for this query in India.
Distemper, the one that starts as a cough and ends somewhere else
Distemper is on the kennel cough list and it is the reason a cough in an unvaccinated Indian puppy is not a wait-and-see problem. The AVMA notes that dogs in which canine distemper virus is one of the infecting organisms may also have gastrointestinal signs, hardened footpads and, as the disease progresses, neurologic signs such as head tilt or circling, and that these dogs are at greater risk of severe disease and even death. Cornell says a specific diagnosis is usually not pursued in kennel cough unless something serious is suspected, and names distemper as that something. Our canine distemper page for India carries the staging and the Indian data in full.
A reverse sneeze is not a cough at all
The commonest false alarm in small Indian breeds is a reverse sneeze. It is a disconcerting event in which a dog makes unpleasant respiratory sounds, caused by irritation of the soft palate and throat that results in a spasm, during which the neck extends and the chest expands as the dog tries harder to inhale. It sounds similar to the honking noise made by a dog with a collapsing trachea, and it is a far simpler condition that usually does not need any treatment. Its triggers are the same everyday ones, excitement, eating or drinking, pulling on a leash, a collar pressing on the throat, mites, pollen, perfumes and household chemicals.
Telephone a veterinarian the same day if the cough comes with fever, thick nose discharge, refusal of food, lethargy or a productive cough, or with rapid or laboured breathing, because those signs can mean bacteria have infected the lungs and immediate veterinary attention is needed. Go today for any cough lasting more than 10 days, for blue or grey gums or a fainting episode, which in a small dog indicate a respiratory emergency, and for any coughing puppy or unvaccinated dog, because puppies are more prone to severe disease. Ring the clinic first and say you suspect kennel cough so they can keep your dog out of the waiting room. Whether any of this applies to your animal is your own veterinarian's call, and you can find one through our directory of registered veterinarians.
One further page will carry the collapsing-trachea half of this in the depth it deserves, our forthcoming page on tracheal collapse in dogs. Until it lands, the numbers worth knowing are these: in a retrospective study of 100 dogs with collapsing trachea, 71 percent responded to medication and management of secondary factors such as obesity and irritants in the air, 7 percent had disease so severe that they died within one month of diagnosis, 6 percent had severe additional disease problems, and the remaining 16 percent were considered candidates for surgical treatment. There is no cure for tracheal collapse, but ongoing medical management can improve clinical signs and quality of life.
How veterinarians diagnose kennel cough, and when a test is worth paying for
To diagnose kennel cough, a veterinarian starts from the history and the examination rather than from a laboratory. Usually the history of exposure to a crowd of dogs within the proper time frame, plus typical examination findings in a coughing dog that otherwise feels well, is adequate to make the diagnosis. Cornell agrees that while tests can identify each possible pathogen, unless something serious is suspected a specific diagnosis is usually not pursued.
One examination finding does most of the work and costs nothing. The cough is easily induced by gentle palpation of the larynx or trachea. That is the tracheal pinch, and it is worth knowing that it does not separate kennel cough from tracheal collapse, because a cough can also be easily elicited from gently palpating the throat of dogs with tracheal collapse. A positive pinch tells your veterinarian the cough comes from the windpipe, not which windpipe problem it is.
Chest radiographs are the test that changes what happens next. Thoracic radiographs are essential to determine the severity of disease and to exclude other causes of cough, and they are often normal in dogs with a cough only, while dogs may have evidence of alveolar disease if the disease has progressed to pneumonia. Veterinary Partner puts the same point in owner language, that radiographs show bronchitis and are particularly helpful in determining whether there is a complicated pneumonia. A normal film is therefore a useful result, not a wasted one.
What a PCR panel adds, and the Indian assay that now exists
PCR panels name the organism, and that matters in an outbreak rather than in one dog. Nasopharyngeal or tracheal swabs may be taken for PCR testing to evaluate for the cause of the clinical signs, and reference laboratories now run panels that test for most of the kennel cough agents from a single swab, which helps guide therapy and set expectations. The AVMA is more restrictive and says testing is recommended when multiple dogs are affected, as in outbreaks, or if a dog is getting worse despite supportive treatment.
India now has its own assay, published in 2025. Researchers at Lala Lajpat Rai University of Veterinary and Animal Sciences in Hisar, Haryana developed and optimised a multiplex PCR that detects canine distemper virus, canine adenovirus type 2 and Bordetella bronchiseptica in a single reaction, with 100 percent analytical specificity and no cross-reactivity with non-target organisms. Against previously published singleplex methods it achieved 94.12 percent sensitivity, 94.74 percent specificity and 94.55 percent overall accuracy. Its positive controls came from two products sold in India, canine distemper virus and adenovirus type 2 from the live attenuated freeze-dried vaccine Canishot DHPPL made by Intas Pharmaceuticals, and Bordetella bronchiseptica from the live freeze-dried vaccine Nobivac KC made by MSD Animal Health India.
| Test | What it answers | Its known limit |
|---|---|---|
| History and examination, including the tracheal pinch | Whether this is an acute infectious cough in a dog that is otherwise well | A cough is elicited by palpating the throat in tracheal collapse too, so the pinch does not separate the two |
| Thoracic radiographs | Whether the lungs are involved and whether another cause of cough is visible | Often normal in a dog with a cough only, and a single film can miss a trachea that collapses at the other phase of breathing |
| Fluoroscopy, the moving X-ray | Where along the trachea the collapse happens and how severe it is | Needs equipment that most Indian first-opinion clinics do not have |
| Bronchoscopy | Direct view of the airway, plus fluid samples to check for infection | Requires general anaesthesia |
| Multiplex PCR on an oropharyngeal or nasal swab | Which of the organisms is present, which matters in an outbreak | In the Indian series, 37 of 55 coughing dogs tested negative for all three targeted pathogens |
| Echocardiography | Whether a murmur is actually causing the cough | Most dogs with a cough and a heart murmur are not in heart failure, so a murmur alone does not explain a cough |
The most useful thing in the Indian study is its exclusion list, and it is a diagnostic lesson in itself. Dogs presenting with respiratory signs such as coughing, nasal discharge or clinical evidence of bronchopneumonia were included, while cases with respiratory symptoms attributable to cardiovascular disorders, tracheal dysfunction or allergic conditions were excluded. In other words the Indian investigators had to separate heart disease, the collapsing trachea and allergy from kennel cough before they could even begin, which is exactly the separation an owner is trying to make at home.
One diagnostic caution belongs on this page because of what the Indian numbers showed. Detection may still be influenced by the stage of disease and sample quality, limitations shared by all PCR-based diagnostics that the authors say should be considered in surveillance protocols. A negative swab in a dog that is plainly coughing means the three organisms tested were not found on that day, not that the dog is well.
Treatment of kennel cough, and an honest answer on home remedies
An uncomplicated case of kennel cough will go away by itself, and cough suppressants can improve comfort while the infection resolves. There is no special drug for dogs with this syndrome, and the treatment approach depends on how sick the dog is. Nothing sold over a counter will cure it faster, because most cases are caused by viral illnesses and the dog's own immune response does the work.
Start by deciding which of the two cases you have, because the treatments are different. An uncomplicated case runs a week or two and entails frequent fits of coughing in a patient who otherwise feels active and normal, with no fever and no listlessness, just lots of coughing. Appetite loss, laboured breathing and reduced activity can indicate progression to pneumonia, and dogs with pneumonia appear sick. The AVMA draws the same line, that most mildly affected dogs make a full recovery on basic supportive care while more severe illness may need anti-inflammatory medication and fluids.
The recovery clock is written three ways by three authorities and the spread is worth seeing. In most cases the illness is mild and dogs fully recover within 7 to 10 days. Usually the dog will recover within two weeks. The MSD Veterinary Manual is the least optimistic and the most specific, that severity usually diminishes during the first 5 days but the disease persists for 10 to 20 days. The Himalaya Wellness page that ranks first in India says symptoms subside within a week or two and recommends an examination if the cough persists beyond a week, which is the one piece of advice on that page this one agrees with entirely. Owners ask when to worry about kennel cough, and the checkable answer is the 10-day line: antibiotics are not usually necessary or recommended unless there are signs of bacterial pneumonia, including illness that lasts more than 10 days.
Antibiotics, and the disagreement nobody prints
Three authorities give three different answers on antibiotics, and an Indian owner should know that before the prescription is written. Cornell says most cases are caused by viral illnesses so antibiotics are not warranted, and that where the risk of secondary bacterial infection is high, such as in shelter situations, antibiotics may be prescribed, with doxycycline the antibiotic of choice. The AVMA says antibiotics are not usually necessary or recommended unless there are signs of bacterial pneumonia, including illness that lasts more than 10 days. The MSD Veterinary Manual says the disease is often self-limiting and antibiotics are usually not needed unless there is evidence of pneumonia, and that when they are needed the drug should be selected by culture and sensitivity testing.
Veterinary Partner takes the opposite practical line and says why. Given that several agents in the complex can push a minor bronchitis into pneumonia, antibiotics are frequently prescribed to kennel cough patients to prevent or curtail pneumonia before it warrants hospitalisation. That is a real disagreement between four respected sources and it is not resolved. It is also exactly the conversation to have with your own veterinarian rather than to settle from a web page, because the answer depends on how your dog looks in the room.
Two further drug points come with warnings attached. Antitussives are contraindicated in patients with pneumonia, so a cough suppressant that helps an uncomplicated dog rest is the wrong drug for a dog whose lungs are involved. And anti-inflammatories such as steroids and non-steroidal drugs have been used in the past but do not shorten the course of disease, so their usage provides questionable benefit. No quantity of any drug appears anywhere on this page, because the dose is a decision for the veterinarian treating your animal.
Home remedies for kennel cough: what actually helps
Eight things you can do at home are supported by the sources this page opened, and none of them is a medicine. GoodRx, which ranks on the Indian query, lists using a harness rather than a collar and lead to reduce irritation to the windpipe, providing a quiet warm space to rest, running a humidifier to moisten the air passages, wiping discharge from the eyes and nose with a warm damp towel, keeping the dog in a clean well-ventilated area, quarantining the dog from other dogs, providing plenty of water, and limiting activity until the dog gets better. The AVMA reduces the same list to one principle, avoiding situations that promote coughing and irritate airways, which means encouraging the dog to rest and avoiding excitement and neck leashes.
The Indian page that ranks first gives three of the same measures and one of them is genuinely good. Himalaya Wellness advises isolating the dog from other pets at the first sign of infection, providing an adequately ventilated space during recovery, and removing the collar, which it says will help calm the irritated throat. Swapping a neck collar for a harness is the single most useful thing an Indian owner can do on day one, and it is the one piece of home care that two independent sources on this page agree on.
- Swap the collar for a harness for every walk until the cough has gone, to take pressure off the windpipe.
- Isolate the dog from other dogs, indoors and on the street, until it has fully recovered.
- Keep the room ventilated and the air clean, because poor ventilation and heavy dust damage the airway's own clearance system.
- Cut exercise and excitement, since coughing generally worsens with activity or exercise.
- Keep water available and wipe the eyes and nose with a warm damp cloth.
- Ring the clinic before you take the dog in, so the staff can keep it away from other patients.
- Re-check at one week if there is no improvement, possibly with chest radiographs, because failure to resolve suggests an underlying condition.
Do not buy a human cough syrup, an over-the-counter antibiotic or a herbal tonic and treat a coughing dog at home without a diagnosis. The reason is not that home care is useless, it is that a honking cough in an Indian dog is kennel cough only some of the time, and the alternatives are a collapsing trachea, chronic bronchitis, heart disease, an inhaled object and distemper Cohen A. Tracheal collapse. Cornell… American Veterinary Medical Association. Cough suppressants are actively contraindicated when the lungs are involved, and steroids and non-steroidal anti-inflammatories do not shorten this disease. Spend the money on an examination first, not on a bottle. Your own veterinarian decides what your dog needs.
One last thing to expect when you do go. If the cough has not at least partly improved after one week of treatment, a re-check examination, possibly including chest radiographs, is a good idea, because failure of kennel cough to resolve suggests an underlying condition, whether that is a previously silent collapsing trachea, pneumonia, non-infectious bronchitis, congestive heart failure or something else that causes coughing.
What kennel cough costs in India, from two government rate cards
The tests that separate kennel cough from its lookalikes cost very little at an Indian government veterinary hospital. The Madras Veterinary College Teaching Hospital in Chennai prints X RAY at Rs 100, ECHO at Rs 300, ECG at Rs 50, ENDOSCOPE at Rs 500 and haematology, biochemistry, urine or culture at Rs 50, against a small animal registration of Rs 100 valid for 7 days. The vaccine, at a private chain, starts at Rs 1,349.
That price list is the whole differential, costed. A chest film at Rs 100 is what tells a veterinarian whether the lungs are involved Tamil Nadu Veterinary and Animal Sciences…. An echocardiogram at Rs 300 is what settles whether a murmur is causing the cough, which matters because most dogs with a cough and a heart murmur are not in heart failure Tamil Nadu Veterinary and Animal Sciences…. A bronchoscopy, billed as ENDOSCOPE at Rs 500, is what directly visualises a collapsing trachea and collects fluid to check for infection Tamil Nadu Veterinary and Animal Sciences…. No page ranking on the Indian query prices any of it.
A second government rate card prices the same film lower and then tells you why that may not help. The Chandigarh Administration's fee table for government veterinary institutions lists an X-Ray fee per film at Rs 30-00, and the entry itself carries the note that the radiology wing is not functioning. The same schedule prices the outdoor ticket for pet animals at Rs 30-00 and a blood or urine test at Rs 20-00. A rate card is a price, not an appointment, and the Chandigarh page is unusually honest about the difference.
| What | Published figure | Who publishes it |
|---|---|---|
| Small animal registration, valid 7 days | Rs 100 | Madras Veterinary College Teaching Hospital, Chennai, hospital fee structure |
| Chest radiograph | Rs 100 | Madras Veterinary College Teaching Hospital, Chennai |
| X-Ray fee per film at a government veterinary institution | Rs 30-00, with the note that the radiology wing is not functioning | Chandigarh Administration, Animal Husbandry and Fisheries |
| Echocardiogram | Rs 300 | Madras Veterinary College Teaching Hospital, Chennai |
| Electrocardiogram | Rs 50 | Madras Veterinary College Teaching Hospital, Chennai |
| Endoscopy, the route to a bronchoscopic look at the airway | Rs 500 | Madras Veterinary College Teaching Hospital, Chennai |
| Haematology, biochemistry, urine or culture | Rs 50 | Madras Veterinary College Teaching Hospital, Chennai |
| Outdoor ticket for a pet animal | Rs 30-00 | Chandigarh Administration, Animal Husbandry and Fisheries |
| Kennel cough vaccine at a private chain | Starts at Rs 1,349 | Vetic Pet Clinic national dog vaccination page |
| 9-in-1 DHPPiL combination at the same private chain | Starts at Rs 899 | Vetic Pet Clinic national dog vaccination page |
| DHPPi+L dose at a government teaching hospital | Rs 360 | Madras Veterinary College Teaching Hospital, Chennai |
| Annual booster package covering kennel cough and anti-rabies | Starts at Rs 3,199 against a struck-through Rs 3,806 | Vetic Pet Clinic national dog vaccination page |
Every rupee figure above went through the exchange-rate test before publication and none of them is a converted dollar list. Rs 100 is about 1.19 US dollars at 84.38 to the dollar and 1.35 at 74, Rs 300 is 3.56 and 4.05, Rs 500 is 5.93 and 6.76, and Rs 360 is 4.27 and 4.86, so none lands on a round dollar amount. The private chain's Rs 1,349 works out at 15.99 and 18.23, which is close to a round 16 dollars at one rate and not at the other; the shape of that number, like Rs 899, Rs 3,199 and Rs 6,499, is an Indian retail price point rather than a conversion. The chain writes them with the rupee glyph, ₹1,349 for the kennel cough dose and ₹899 for the 9-in-1, and the government card is published by the Department of Clinics at Madras Veterinary College, a constituent college of Tamil Nadu Veterinary and Animal Sciences University.
What is not priced anywhere, and why that matters
Nobody we opened prices a canine respiratory PCR panel for an Indian owner. Neither government rate card carries a line for a respiratory PCR, a Bordetella culture or a multiplex panel; the Madras Veterinary College table's laboratory line is a flat Rs 50 for haematology, biochemistry, urine or culture, and the Chandigarh schedule prices only a blood or urine test at Rs 20-00 Chandigarh Administration. The Indian multiplex PCR published in 2025 describes itself as cost-effective but prints no price per sample. That absence was checked against the same two rate cards that did yield prices in this session, and the control passed, because both cards returned their imaging and vaccination lines through the identical route Chandigarh Administration.
Nobody publishes an Indian hospitalisation cost for kennel cough pneumonia either, and this page prints none rather than estimating one. The only guidance the sources give is clinical: dogs with a cough only often do not require hospitalisation, and a dog that does should be housed in isolation from other animals in the hospital. If you are weighing what an unexpected admission would cost, our guide to pet insurance in India sets out what Indian policies actually cover.
The kennel cough vaccine: what it can do, what it cannot, and what is sold in India
To prevent kennel cough as far as a vaccine can, give the non-core Bordetella and parainfluenza vaccine before exposure and repeat it annually, understanding that it reduces disease rather than blocking infection. The WSAVA Vaccination Guidelines Group states it in one line: non-core vaccines against respiratory tract pathogens cannot prevent infection but may reduce disease severity. Cornell puts the same fact in owner language, that much like the flu vaccine in humans, this one does not prevent infection.
That sentence is the correction this page exists to make. The most widely used non-core vaccines for dogs are those against Bordetella bronchiseptica and canine parainfluenza virus, and an Indian clinic chain sells the kennel cough shot on a page headed as the mandatory vaccines for dogs in India, telling readers that the vaccine prevents respiratory infections. The guideline body, the Cornell teaching hospital and Veterinary Partner all say the opposite, that Bordetella bronchiseptica vaccination may not prevent infection and that in some cases it minimises signs of illness without entirely preventing infection, whether a nasal, oral or injectable vaccine is used Cornell University College of Veterinary… Squires RA, Crawford C, Marcondes M.
Vaccinating is still worth doing, and the epidemiological reason is the honest one. Even vaccines that only reduce and do not prevent infection carry epidemiological advantages, because they reduce spread, increase herd immunity and decrease usage of antimicrobials. The AVMA adds the individual reason, that vaccines make a dog less likely to develop severe disease or to spread the infection to other dogs.
Three routes, and the age each one starts
The vaccine comes in three forms and they are not interchangeable. The WSAVA lists parenteral products (a subunit Bordetella bronchiseptica preparation, an inactivated Bordetella bronchiseptica bacterin, and modified live parainfluenza), intranasal products (attenuated Bordetella bronchiseptica with or without parainfluenza and adenovirus type 2) and oral products (attenuated Bordetella bronchiseptica with or without parainfluenza). Each mucosally applied vaccine provides protection after a single dose, some can be applied as early as 3 weeks of age and others at 7 or 8 weeks, and revaccination is annual.
Route affects outcome, and the guideline says so carefully. Parenterally administered parainfluenza and Bordetella bronchiseptica vaccines may provide a level of protection that differs from that provided by mucosal vaccines, and there is some evidence that the intranasal route provides superior clinical outcomes when compared to the oral route. Veterinary Partner adds the practical version, that as a general rule nasal vaccination provides faster immunity than injectable vaccination and stimulates local immunity right where the natural infection would take hold. Age decides the choice for the youngest puppies: the oral vaccines can be used in dogs 7 or 8 weeks of age and older, but the intranasal vaccine must be used for dogs that are younger.
| Route | Earliest age | Doses | What it is good for | The catch |
|---|---|---|---|---|
| Intranasal, live attenuated Bordetella with or without parainfluenza and adenovirus type 2 | As early as 3 weeks of age, following the product leaflet | A single dose, then annually | Fastest onset and local immunity at the site of natural infection; preferred in shelters for rapid onset of optimum immunity | Some dogs sneeze or have nasal discharge in the week after; must never be injected |
| Oral, live attenuated Bordetella with or without parainfluenza | 7 or 8 weeks depending on the product | A single dose, then annually | Easy to give inside the cheek with no risk of the dog sneezing the dose out | Some evidence that the intranasal route gives superior clinical outcomes; must never be injected |
| Injectable, subunit or inactivated Bordetella, plus modified live parainfluenza | Parainfluenza from 6 weeks, every 2 to 4 weeks until 16 weeks or older | Two doses 2 to 4 weeks apart, then annually | A good choice for a dog that will not tolerate its muzzle being approached | Protection may differ from that of the mucosal route; duration of immunity in pet dogs is uncertain |
One safety line in that guideline is worth reading twice. The live vaccines intended for intranasal or oral administration must not be inadvertently injected parenterally, as this may lead to a severe adverse reaction. Transient coughing, sneezing and ocular or nasal discharge may occur in a small percentage of dogs vaccinated with intranasal or oral vaccines, which is expected and not a failure.
The minimum age four sources write four ways
Ask when a puppy can have this vaccine and you get four different answers. The WSAVA says some mucosal products can be applied as early as 3 weeks of age and others at 7 or 8 weeks, and directs you to the product leaflet. The MSD Veterinary Manual says one inoculation is administered to puppies older than 3 weeks. Veterinary Partner says intranasal vaccination may be given as early as 3 weeks, the oral vaccine from eight weeks, and injectable vaccination needs two doses roughly a month apart after four months of age. Cornell says the Bordetella bronchiseptica vaccine is a lifestyle vaccine available for dogs at least 12 weeks old. The leaflet on the vial in your veterinarian's hand governs, and this page does not pick a winner.
Two timing facts decide whether the shot works at all before a boarding stay. It takes four days to generate a solid immune response after intranasal vaccination, so it is best given at least four days before exposure, and vaccination is not useful in a dog already incubating kennel cough. Intranasal immunity generally lasts 12 to 13 months, which is why every source on this page says annually.
What is actually sold in India, and what Indian rules require
MSD Animal Health India sells Nobivac KC, a lyophilised live vaccine containing live Bordetella bronchiseptica strain B-C2 and live canine parainfluenza virus strain Cornell, indicated for active immunisation of dogs against both organisms resulting in prevention of kennel cough, administered into one nostril and stored at 2 to 8 degrees Celsius. That the product exists in India is not an inference: the 2025 Hisar study built its Bordetella bronchiseptica positive control from a vial of Nobivac KC and its distemper and adenovirus controls from Canishot DHPPL, an Intas Pharmaceuticals product.
Indian law requires none of it. The Prevention of Cruelty to Animals (Dog Breeding and Marketing) Rules, 2017 say at paragraph 28 of the Second Schedule that the dogs at every breeding establishment shall be annually vaccinated against rabies, and preferably against canine distemper, parvo-virus, leptospirosis and viral hepatitis. The words kennel cough, Bordetella and parainfluenza appear zero times in the 51,953 characters of that gazette text. The rules do reach the disease by another route: where a veterinary practitioner finds that animals in a breeding kennel are suffering from a contagious, communicable or infectious disease, a quarantine may be issued on that establishment until the animals have recovered and are no longer capable of transmitting the disease, or are isolated, or are tested, vaccinated or otherwise treated.
What actually forces the issue in India is the boarding kennel, not the law. Many facilities and events where dogs are routinely gathered, such as dog shows, training centres and boarding facilities, require that dogs have certain vaccines, and an Indian boarding marketplace writing for Bangalore lists the dog requirements as rabies, distemper, parvovirus and Bordetella. A private Indian chain schedules the shot on the 120th day of the puppy course alongside the second anti-rabies dose, then annually with the rabies booster. The full Indian calendar, and where this dose sits among the rest, is in our dog vaccination schedule for India, and this page does not repeat it.
One caveat on the evidence behind all of this deserves to be on the record. Reviewing the literature from 1977 to 2014, Ellis concluded that the studies document the efficacy of these vaccines in stimulating disease-sparing mucosal and systemic immune responses, but that many of the published studies are limited by flaws in experimental design, and that many questions about the longevity of vaccine-induced immunity and the impact of natural exposure on herd immunity remain unanswered. The vaccine is worth giving to a dog that boards, and the evidence base under it is thinner than the marketing suggests.
What is different in India: 55 swabs, and everything nobody has counted
India has measured kennel cough in dogs exactly once with a published denominator, and the result is not what a Western page would predict. Oropharyngeal swabs from 55 dogs with respiratory signs at the Veterinary Clinical Complex of Lala Lajpat Rai University of Veterinary and Animal Sciences in Hisar, Haryana, collected between January 2024 and January 2025, found 18 dogs (32.7 percent) positive for at least one of canine distemper virus, canine adenovirus type 2 and Bordetella bronchiseptica.
The pathogen that dominated was distemper virus, not Bordetella. Of the 18 positive dogs, 14 (25 percent of the 55) carried canine distemper virus alone, 2 (3.6 percent) were co-infected with distemper virus and Bordetella bronchiseptica, 1 (1.8 percent) with distemper virus and adenovirus type 2, and 1 (1.8 percent) carried Bordetella bronchiseptica alone. Bordetella bronchiseptica was therefore found in 3 of 55 coughing Indian dogs, and canine distemper virus in 17 of 55. The parallel singleplex assay found 17 of 55 positive (30.9 percent), and the two methods showed a highly significant association.
The other two thirds are the finding nobody talks about. 37 of the 55 dogs tested negative for all three targeted organisms. Some of those dogs will have had one of the agents the assay did not test for, such as parainfluenza virus, canine respiratory coronavirus, Mycoplasma species or Streptococcus equi subspecies zooepidemicus, all of which the AVMA lists in the complex. The authors themselves note that detection is influenced by the stage of disease and by sample quality, limitations shared by all PCR-based diagnostics.
| What was measured | Count | Share of the 55 dogs |
|---|---|---|
| Dogs positive for at least one targeted pathogen by multiplex PCR | 18 | 32.7 percent |
| Canine distemper virus alone | 14 | 25 percent |
| Canine distemper virus with Bordetella bronchiseptica | 2 | 3.6 percent |
| Canine distemper virus with canine adenovirus type 2 | 1 | 1.8 percent |
| Bordetella bronchiseptica alone | 1 | 1.8 percent |
| Negative for all three targeted pathogens | 37 | 67.3 percent |
| Coughing as a presenting sign | 55 | 100 percent |
| Nasal discharge | 33 | 60 percent |
| Inappetence to anorexia | 25 | 45.45 percent |
| Sneezing | 22 | 40 percent |
| Dogs with incomplete vaccination status | 24 | 43.63 percent |
| Dogs with no vaccination at all | 12 | 21.81 percent |
| Dogs with complete vaccination status | 19 | 34.54 percent |
| Dogs aged between 1 and 3 years | 26 | 47.27 percent |
| Males | 38 | 69.1 percent |
One number in that table should change how an Indian owner reads a cough: 19 of the 55 dogs were fully vaccinated. A completed course does not put a dog outside this population, which is exactly what the WSAVA means when it says these vaccines cannot prevent infection but may reduce disease severity.
The paper's own abstract and its own results table do not agree to the decimal, and this page prints both. The abstract says the assay detected pathogens in 32.2 percent of cases with canine distemper virus the most prevalent at 25 percent, while the results section reports 18 of 55, which is 32.7 percent, and the diagnostic-performance table gives a disease prevalence of 30.91 percent for the singleplex comparator and 27.27 percent for distemper virus. The counts are unambiguous even where the percentages drift, so this page quotes the counts and derives the shares from 55.
A controlled absence, not a shrug
Beyond that single series, the Indian literature on this disease is close to empty, and it is worth being precise about how empty. A PubMed search run on 23 September 2026 for kennel cough, Bordetella bronchiseptica or infectious respiratory, combined with dog, dogs or canine, and with India in the title or abstract, returned a count of 2. One of those two records is the Hisar assay. The other is a study of Bordetella bronchiseptica isolated from horses at the National Research Centre on Equines in Hisar, which carries no canine denominator at all and is cited on this page only because it records that infection with this organism has been reported from pigs and dogs in India.
Widening the instrument does not rescue it. The same endpoint searched on Indian author affiliation rather than on the words India returned 13 records, and the canine respiratory ones among them are the same two plus a study of Bordetella infection in pigs in northern India. The control run in the same session through the identical endpoint, canine parvovirus with dog or dogs and India in title or abstract, returned 34 records. The instrument works; the Indian kennel cough literature is genuinely two papers deep. Anyone telling you an Indian prevalence figure for this disease is quoting something that has not been published.
Two Indian claims about this disease circulate with nothing behind either of them. A national clinic chain's blog tells Indian readers that kennel cough is a very common cause of respiratory problems among dogs in Mumbai, and prints no count, no clinic caseload and no source for it. The Himalaya Wellness page that ranks first on the Indian query is published from Bengaluru, is labelled by its own site as a 2 minute read, and carries exactly one reference, a single page of a 2021 magazine article, with no Indian figure anywhere in it. Neither claim is refutable and neither is checkable, and that is what a two-paper literature looks like from the consumer end.
What India's climate and streets add to a Western picture
Three Indian conditions map directly onto documented risk factors. Stress and extremes of ventilation, temperature and humidity increase susceptibility to, and severity of, this disease, and heavy dust exposure, poor ventilation and crowding stress each damage the mucociliary escalator that keeps bacteria out of the lower airway. An Indian dog that spends the dry season in dust and the monsoon in a closed humid room meets two of those conditions in the same year, and our monsoon care guide for dogs in India and heat safety guide cover the practical side.
The free-ranging dog population is the second Indian difference, and it cuts both ways. Most causes of coughing that begin acutely in dogs are infectious and usually represent some form of kennel cough, and the airborne route needs no contact at all, only shared air and shared bowls. At the same time the Hisar series is a reminder that in an under-vaccinated Indian population the commonest thing found in a coughing dog was distemper virus, which is a different disease with a different outlook and is covered on our canine distemper page for India.
The third difference is what a boarding kennel asks for. There is no Indian statute that requires this vaccine, and the Dog Breeding and Marketing Rules 2017 do not name it, so the requirement in practice is set by whoever is taking your dog for the week, and Indian boarding services list Bordetella alongside rabies, distemper and parvovirus. Book the vaccine at least four days before the stay, because that is how long an intranasal dose needs to produce a solid immune response.
Living with it: the fortnight at home, and who else in the house is at risk
Plan for a fortnight of coughing in a dog that otherwise seems well, and plan the isolation around the shedding rather than around the cough. An uncomplicated case runs a week or two, most dogs fully recover within 7 to 10 days, and the disease persists for 10 to 20 days in the MSD Veterinary Manual's account. Infected dogs shed Bordetella organisms for one to three months after infection, which is a much longer clock.
Keep the dog away from other dogs until it has fully recovered, and then think again before the next boarding stay. Dogs with kennel cough should be housed separately from other dogs, with personal protective equipment used and hands washed before and after working with an infected dog. In a flat with more than one dog that means separate rooms, separate bowls and separate walks, because organisms travel on toys, food bowls and other objects as readily as through the air.
Recovery gives a period of protection and it is shorter than most owners assume. Dogs that have recovered from Bordetella bronchiseptica are typically immune to reinfection for six to 12 months. That is roughly the same interval as the annual vaccine, which is one reason the shot is repeated yearly rather than given once.
Can humans catch it, and what about the cat
The risk to people is real, rare and confined to one organism. Only one of the organisms in this complex, Bordetella bronchiseptica, is known to infect people, cases of dog-to-human transmission are extremely rare, and most reported cases have been in severely immunocompromised people. Ordinary handwashing and not letting a coughing dog breathe into a face are proportionate; keeping an elderly or immunosuppressed family member out of the room while the dog coughs is sensible.
The cat in the house is more exposed than the people are. Some of the organisms in this complex, including Bordetella bronchiseptica, Streptococcus equi subspecies zooepidemicus and canine influenza virus, can infect and cause illness in cats. A household with both species should separate them for the fortnight, the same way it would separate two dogs.
The dogs in the house that need protecting first
Four groups take this worse than an ordinary adult dog does, and the evidence names each of them.
- Puppies, because all dogs are susceptible but puppies are at higher risk of infection and more prone to severe disease, and because the illness may progress to bronchopneumonia in them.
- Older dogs with other health problems, whom the AVMA groups with puppies as at greater risk of severe disease and even death.
- Debilitated adult or aged dogs, in whom the illness may progress to chronic bronchitis rather than resolving.
- Flat-faced breeds, since brachycephalic dogs with a higher likelihood of dysfunctional breathing are much more likely to have severe outcomes from any respiratory disease.
That fourth group matters in India because of which dogs Indian cities keep. The Pug and the other short-nosed breeds have no special susceptibility to catching this, since all breeds and ages are susceptible, but they have less room to spare when an airway swells. The same logic applies in reverse to the small breeds with collapsing tracheas, the Pomeranian and the Yorkshire Terrier, in whom an ordinary infection can unmask a trachea that was managing quietly until then.
Why a reported outbreak usually is not one
Every year or two a wave of alarm about a new dog respiratory disease travels through social media, and the veterinary reading of it is worth having. This syndrome is endemic, meaning always present in dog populations, with a background level of disease that usually flies under the radar alongside periodic clusters. A veterinary epidemiologist writing for Veterinary Partner describes how a city might have a hundred coughing dogs a week with nobody hearing about it, until fifty of those owners post about it and an ordinary background level of disease becomes a reported outbreak of a disease affecting dozens of dogs.
Two structural reasons make the true picture unknowable, and they apply with more force in India. There is always limited information about the number of dogs with this illness because of a lack of funding for research, no real surveillance system, and testing that does not necessarily change treatment for these dogs. India has one published series of 55 dogs and a PubMed count of two, so nobody in India can tell you whether this month is worse than last month. What an owner can control is the dog in front of them, which means the vaccine before a boarding stay, a harness instead of a collar, and an examination rather than a bottle when the cough starts.
For the routine that surrounds all of this, our adult dog care guide for India covers the yearly health calendar, and the guide to keeping a dog in an Indian apartment covers the shared lifts, corridors and lawns where an airborne infection finds its next dog.
Common questions
Can kennel cough go away by itself?
Yes, in most dogs. An uncomplicated case of kennel cough will go away by itself, running a week or two of frequent coughing fits in a dog that otherwise feels active and normal, with no fever and no listlessness. Cough suppressants can improve comfort while the infection resolves. Appetite loss, laboured breathing or reduced activity means the case is no longer uncomplicated.
What are the first signs of kennel cough?
The first sign is a cough that sounds like a goose honk and may be followed by retching and gagging, appearing suddenly 5 to 10 days after the dog met other dogs. Other early symptoms are sneezing and a runny nose or eyes. The cough is easily induced by gentle pressure on the larynx or windpipe.
Can humans get kennel cough from a dog?
Almost never. Only one organism in this contagious complex, Bordetella bronchiseptica, is known to infect people, and cases of dog-to-human transmission are extremely rare, with most reported cases in severely immunocompromised humans. Cats are the bigger household risk, because Bordetella bronchiseptica, Streptococcus equi subspecies zooepidemicus and canine influenza virus can all infect and sicken them.
How do you cure kennel cough on a dog?
You do not cure it with a drug, because there is no special drug for dogs with this syndrome. Most mildly affected dogs make a full recovery on supportive care that avoids situations promoting coughing, which means rest, no excitement and no neck leashes. Severe cases may need anti-inflammatory medication and fluids, and antibiotics only where there are signs of bacterial pneumonia.
What is the most effective way to treat kennel cough in dogs?
Rest, isolation from other dogs and a harness instead of a collar, with a veterinary examination to confirm what the cough actually is. Most cases are caused by viral illnesses, so antibiotics are not warranted, and where secondary bacterial infection is likely, such as in shelters, doxycycline is the antibiotic of choice. Anti-inflammatories do not shorten the disease.
What is the best medicine for kennel cough?
There is no single best medicine, and quantities are never printed here because dosing is your veterinarian's decision. Where coughing prevents rest, anti-tussives may be prescribed. Steroids and non-steroidal anti-inflammatories have been used in the past but do not shorten the course of disease, so their benefit is questionable. Antibiotics belong to the minority of cases with bacterial involvement.
Can you treat kennel cough without going to the vet?
You can support an uncomplicated case at home, but you cannot diagnose one at home. Failure of a cough to resolve suggests an underlying condition, and a honking cough may be a collapsing trachea, pneumonia, non-infectious bronchitis, congestive heart failure or another cause entirely. If there is no improvement after a week, a re-check with chest radiographs is sensible.
Can kennel cough heal itself?
Yes for an uncomplicated case, which is generally self-limiting and should be at least partly improved after one week. The dog should be clearly improved, if not recovered, after about a week. Several agents in the complex are more intense and can push a minor bronchitis into pneumonia, which is a potentially life-threatening disease and does not heal itself.
How long does kennel cough last in a dog?
Severity usually diminishes during the first 5 days, but the disease persists for 10 to 20 days. Start to worry if the cough is still there after 10 days, because that duration is one of the signs that bacterial pneumonia has set in. Shedding continues far longer, for one to three months after infection.
Can a fully vaccinated dog still get kennel cough?
Yes. In India's only published series of coughing dogs, 19 of the 55 presented with complete vaccination status, 24 with incomplete vaccination and 12 with none at all. That matches what the guidelines say, that non-core vaccines against respiratory tract pathogens cannot prevent infection and only reduce disease severity.