Dog Health
Infectious Diseases in Dogs UK — Parvovirus, Distemper & More
Published Last updated 3 min read
Quick answer
UK dogs face several preventable infectious diseases — parvovirus, distemper, leptospirosis, kennel cough and lungworm are the most important. Vaccination and year-round parasite prevention protect your dog. Unvaccinated puppies and senior dogs are most vulnerable.
Core infectious diseases in UK dogs
| Disease | Key signs | Prevention |
|---|---|---|
| Parvovirus | Severe vomiting, bloody diarrhoea, collapse | Vaccination; isolate puppies until fully vaccinated |
| Distemper | Fever, coughing, neurological signs | Core vaccination |
| Leptospirosis | Fever, vomiting, kidney/liver failure | Annual vaccination |
| Kennel cough | Harsh honking cough | Bordetella vaccine for at-risk dogs |
| Lungworm | Coughing, bleeding disorders | Monthly worming in affected areas |
| Lyme disease | Lameness, fever (from ticks) | Tick prevention; check after walks |
Parvovirus — still a UK threat
Canine parvovirus is highly contagious and survives in the environment for months. It attacks the gut lining and immune system. Puppies under six months are most at risk.
Signs include sudden vomiting, foul diarrhoea (often bloody), lethargy and dehydration. This is an emergency — survival depends on rapid intensive care with fluids and hospitalisation.
Keep unvaccinated puppies away from public parks and areas where unknown dogs have been until vaccination courses are complete.
Leptospirosis
Spread through urine of infected rats, cattle and wildlife — common in UK waterways and farmland. Dogs drink from puddles, rivers and canals.
Leptospirosis damages the liver and kidneys and can be fatal. It is also zoonotic — humans can become infected through contact with infected urine.
Annual leptospirosis vaccination is recommended for most UK dogs.
Kennel cough (infectious tracheobronchitis)
A syndrome caused by multiple viruses and bacteria. Highly contagious in group settings.
Most dogs recover within one to three weeks with rest. Puppies, seniors and brachycephalic breeds can develop pneumonia — contact your vet if breathing becomes laboured.
Lungworm (Angiostrongylus vasorum)
A parasite spread by slugs and snails — increasingly recognised across the UK. Dogs ingest larvae from grass, water bowls or toys left outside.
Signs include coughing, bleeding (nose, gums), neurological problems and sudden collapse. Monthly preventive worming is essential in endemic areas — ask your vet if your region is affected.
Vaccination schedule basics
- Puppies — First vaccinations from 8 weeks; booster at 12 weeks; annual boosters thereafter
- Adult dogs — Annual health check with vaccination review
- Kennel cough — Annual or six-month booster for boarding dogs
Never allow vaccination gaps in puppies. Partial vaccination does not provide full protection.
When to see your vet urgently
- Vomiting and diarrhoea in a puppy
- Collapse or extreme lethargy
- Difficulty breathing or persistent coughing
- Bleeding from nose or gums
- Fever with refusal to eat
Sources & further reading
Facts in this guide are rewritten in plain English from publicly available UK advice. We name the organisation where a specific point comes from their guidance. Links below go to the original pages — use them to read the source material directly.
PETHEALTH+ is independent. These organisations do not sponsor, approve, or partner with this website. Guidance checked against sources listed below (last updated 2026-06-25).
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Frequently Asked Questions
- What vaccinations do UK dogs need?
- Core UK vaccinations cover distemper, hepatitis, parvovirus and leptospirosis. Kennel cough (Bordetella) is recommended for dogs in boarding, daycare or group walks. Your vet tailors the schedule to your dog's lifestyle.
- Is parvovirus still a problem in the UK?
- Yes. Parvovirus remains a serious threat, especially to unvaccinated puppies. It causes severe vomiting and diarrhoea and can be fatal within days without intensive veterinary treatment.
- How does kennel cough spread?
- Through airborne droplets, shared bowls and contact at parks, boarding kennels and grooming salons. Vaccination reduces severity but does not guarantee complete protection.
- Can my dog catch diseases from wildlife?
- Yes. Leptospirosis spreads via rat urine in water. Lungworm comes from slugs and snails. Ticks carry Lyme disease. Vaccination and parasite prevention reduce these risks.