If my dog had parvo, can she be a carrier and infect her puppies?

Parvovirus infected dogs are the only carriers of the virus and can continue to shed the virus up to 2 weeks after being infected. Besides this there is no carrier of the virus that exists in healthy pets.

Puppies can be born with parvo if their mother has parvo or was never vaccinated against the disease. Parvo can be passed to a puppy through the placenta of an infected mother. Unfortunately, the prognosis is not good when puppies are born with parvo. Should any of the puppies not suckle , have bloody diarrhea, and/or vomit and/or be lethargic, they need to be seen by your veterinarian right away.

No, Doria cannot be infected with [parvovirus](https://www.petcoach.co/article/spaying-ovariohysterectomy-the-benefits-in-dogs/) a second time after having survived [parvovirus infection](https://www.petcoach.co/article/canine-parvovirus-7-things-to-know) once. A dog or puppy that has recovered from parvo infection cannnot get infected a second time. Studies have shown immunity lasts at least 3 years, but the pup may be considered immune for the rest of its life due to natural antibodies towards the virus.

It's fine to breed Ruger, as parvo is not transmitted genetically, but I would make sure that both he and the female are vaccinated for parvo to prevent the puppies from potentially getting it after they are born.

If the puppies were vaccinated with a modified live virus vaccine they can shed the virus for 7-10 days. However, the virus shed is non-pathogenic, and so will NOT cause disease. The most it would do is "vaccinate" in-contact animals.

It would be extremely unlikely for a dog that has survived parvovirus to be affected again - the virus provides such excellent immunity that some veterinarians will take serum from recovered dogs to give transfusions to those affected with the disease (although this may or may not help). There are many other diseases that could cause diarrhea with that distinctive parvoviral smell. If the diarrhea is severe I'd recommend seeing your veterinarian who can run some tests to determine what might be causing his diarrhea this time around and start some treatment.

Hi there. If the puppy previously had parvo and is now recovered, she should be fine - there is really no need to "prove" she's now negative, as it's not a chronic disease. Once the clinical signs have resolved and the dog is acting normal again, they've recovered and can go on with normal life. They will also be immune to parvo going forward, much like human kids with chicken pox. :)