Canine Distemper in Kerala: Signs, Spread, Vaccination and What Recovery Looks Like

Go to a vet promptly if your dog, especially a puppy or a dog with no clear vaccination record, shows:

• •Fever, dullness and loss of appetite together.
• •Thick or pus-like discharge from the eyes or nose, or a persistent cough or laboured breathing.
• •Vomiting or diarrhoea with weakness.
• •Any twitching, jerking of the jaw as if chewing, trembling, circling, head tilt, wobbling or a seizure.

Phone the clinic first and say you suspect an infectious disease, so they can keep your dog away from others. A seizure lasting more than a few minutes, or repeated seizures, is an emergency. Keep a sick dog away from other dogs at home and on walks.

Canine distemper is caused by a virus closely related to the human measles virus. After infection it multiplies first in the lymph tissue of the airways and then travels in the blood to the lungs, gut, urinary tract, skin and nervous system.

The Merck Veterinary Manual describes a fever that often appears 3 to 6 days after infection, falls, and then returns. Signs depend on the strength of the dog's immune response: some dogs have a mild illness, while others become severely ill. Young puppies are particularly badly affected.

The virus infects many species besides dogs, including many wild carnivores, which is why distemper can also appear in wildlife. Merck notes that domestic dogs, including free-roaming dogs, are considered the main reservoir in most places.

The signs come in waves and vary from dog to dog. Based on the Merck Veterinary Manual:

• •Early, general: fever, lethargy and poor appetite.
• •Eyes and nose: watery, then thick, pus-like discharge.
• •Breathing: cough, which can progress to pneumonia, often with a secondary bacterial infection.
• •Gut: vomiting and diarrhoea.
• •Skin: occasionally pustules on the belly; survivors may develop thickened, cracked footpads and nose, the old name 'hard pad disease'.
• •Teeth: puppies infected while their adult teeth are forming can have damaged enamel.
• •Nervous system: muscle twitching, 'chewing-gum' fits where the jaw jerks, seizures, circling, head tilt, abnormal eye movements, weakness and paralysis.

Nervous-system signs can appear while the dog is ill, or weeks to months after it seemed to recover. That delay is one reason distemper is so distressing for owners.

Distemper spreads mainly by droplets in the air from an infected dog's coughs, sneezes and discharges. Close contact is the main risk: sniffing noses, sharing bowls, licking, and spending time in the same enclosed space. Merck notes that some infected dogs shed the virus for several months.

Unlike parvovirus, the distemper virus is relatively fragile outside the body. Merck says it is sensitive to common disinfectants, including phenols and quaternary ammonium compounds. So the danger is not so much the ground your dog walks on, as the sick dogs it meets.

For walks, that means:

• •Do not let a puppy or an unvaccinated dog greet unknown dogs nose to nose.
• •Give coughing, thin or unsteady street dogs a wide berth.
• •Do not share water bowls at tea shops or parks.

Our guide to walking safely around free-roaming dogs in Trivandrum has more practical routes and habits.

A vaccine has existed for decades, yet outbreaks keep being reported in Kerala. The main reason is a large population of free-roaming dogs that are mostly unvaccinated against distemper, living closely alongside pet dogs.

• •Population: Onmanorama reported in November 2025 that the State Animal Husbandry Department estimated about 9 lakh street dogs in Kerala, based on a 2019–20 state count of about 7 lakh, with a new survey under way.
• •Vaccination gap: state programmes for street dogs focus on sterilisation and rabies. When suspected distemper killed more than 20 street dogs in Kovalam in 2021, ETV Bharat reported officials saying the vaccine was expensive and street dogs were not covered by vaccination plans.
• •Recent outbreak: Manorama reported on 18 September 2026 that distemper was spreading in Palakkad district, around Ottappalam, Alathur and Chittur. The Animal Husbandry Department counted more than 70 pet dogs infected, and many street dogs had died.

Pet dogs catch it from these outbreaks when their own vaccinations are missing or lapsed. Puppies bought or adopted without a complete record, and older dogs whose boosters stopped years ago, are most exposed.

Distemper is one of the three core vaccines for every dog worldwide, with parvovirus and adenovirus. In Kerala, rabies and leptospirosis are essential too. The WSAVA 2024 vaccination guidelines recommend:

• •Starting at 6 to 8 weeks of age, then every 2 to 4 weeks until 16 weeks of age or older, because the mother's antibodies can block early doses.
• •A further dose at or after 26 weeks, or a blood antibody test from 20 weeks, to make sure the puppy has responded. The WSAVA notes that testing for distemper antibodies is especially useful.
• •Revaccination with core vaccines for most adult dogs no more often than every 3 years, as modern vaccines give long immunity.

If your dog's record is incomplete or lost, ask your vet whether to restart. Our puppy vaccination schedule guide shows the usual Kerala pattern, and the boarding vaccination checklist explains what a complete card looks like.

There is no widely used antiviral that cures distemper. Treatment is supportive and can be intensive: fluids, nutrition, antibiotics for secondary infections, fever and pain control, medicines to control seizures and careful nursing. Sick dogs are kept isolated.

Honest expectations, based on the Merck Veterinary Manual:

• •Dogs that receive prompt, aggressive care may recover fully from the fever, breathing and gut signs.
• •The nervous-system outcome is unpredictable. Some dogs keep a twitch in a leg or the face for life, some have lasting weakness or seizures, and some develop nervous signs weeks or months after the rest of the illness.
• •Survivors may have hard, cracked footpads and nose that need ongoing care, and puppies may have damaged tooth enamel.

Many recovered dogs live good lives with a remaining twitch. Your vet will talk you through quality of life if nervous signs are severe.

Any place where dogs mix, from parks to boarding, depends on every dog being vaccinated. At Neolokam, before a first stay there is a trial visit and temperament assessment, and dogs need up-to-date rabies and core vaccinations with the record, which covers distemper, plus current tick and parasite prevention as advised by your vet. If your dog is coughing, has eye or nose discharge or seems unwell before a stay, see your vet and tell the team before drop-off.

For puppies, ask the team about puppy boarding before booking. We do not publish a minimum age, and the team will look at the vaccination dates with you.

Verified:

• •Signs, spread, treatment and long-term effects, from the Merck Veterinary Manual.
• •Vaccination timing, from the WSAVA 2024 guidelines.
• •The Palakkad outbreak (Manorama, September 2026), the Kovalam deaths (ETV Bharat, November 2021) and the street dog estimate (Onmanorama, November 2025). The Kovalam deaths were reported as suspected distemper.

Not verified:

• •A statewide count of distemper cases, or the share of pet dogs in Kerala that are fully vaccinated.
• •Whether any local body in Thiruvananthapuram currently vaccinates street dogs against distemper.