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.

Dog

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

  1. Phone the vet immediately and warn them parvo is suspected — they will arrange isolation entry.
  2. Keep puppy warm and quiet during transport.
  3. 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.

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