Emergency — phone the vet now
Within hours
Suspected parvovirus in a puppy
Bloody diarrhoea and vomiting in an unvaccinated puppy is a parvo emergency — phone the vet now and warn them; isolation and intensive care give the best chance.
Recognise the signs
- Severe vomiting and bloody diarrhoea (often foul-smelling)
- Lethargy, collapse
- Refusal to eat or drink
- Fever then hypothermia in late stages
- Pale gums, dehydration
- Most often 6 weeks to 6 months old
First aid steps
- Phone the vet immediately and warn them parvo is suspected — they will arrange isolation entry.
- Keep puppy warm and quiet during transport.
- Do not bring into the waiting room.
Do NOT
- Do not delay — fluid loss is fatal within 24–72 hours.
- Do not feed.
- Do not give human medications.
- Do not let an unwell puppy interact with other dogs.
While transporting to the vet
- Wrap in a towel that can be discarded.
- Do not let the puppy walk where other dogs may go.
When to phone the vet immediately
- Any unvaccinated puppy with vomiting and bloody diarrhoea is emergency
Common causes
- Highly contagious virus, often in unvaccinated puppies
- Environmental contamination (parks, kennels, pet shops)
- Persists in environment for months
What the vet will need to know
- Vaccination status and dates
- Possible exposure (park, breeder, pet shop)
- When signs started
- Other puppies in the home
Aftercare
- Hospitalisation in isolation, IV fluids, anti-nausea, anti-emetic, antibiotics for secondary infection.
- Mortality is high but survival rates good with early intensive care.
- Disinfect home thoroughly with parvo-active disinfectant (bleach 1:30) — virus persists for months.
Prevention
- Full puppy vaccination course on schedule, with the vet's go-ahead before public walking.
- Avoid parks and pet shops until vaccinated.
- Disinfect any contact area thoroughly after a case.
Breed-specific notes
- Higher mortality reported in: Rottweiler, Doberman, German Shepherd, Pit Bull-types — possibly due to immune factors.
Frequently asked questions
Can vaccinated dogs get parvo?
Rarely — vaccination is highly effective. Always finish the puppy course and keep boosters current.
How long does parvo last in the environment?
Months to over a year in some conditions. Disinfection is essential after a case.
What is the survival rate?
With early intensive treatment, around 80–90% survive. Without treatment, mortality is very high.