Hey! I would suggest leaving your puppy at the vet to continue his treatment because that is his best chance of survival. Vomiting and diarrhea will cause him to become very dehydrated so keeping him on the IV fluids is vital. They are also able to give him IV anti-nausea medication and antibiotics. With hospitalization, his chance of survival is about 50-75%. If you were to take him home, it would be much lower. -Dr. Lindsay Butzer

Hey! If he has 1 shot with breeder before you got him and 1 shot with you, YES you can let him in the backyard. Parvovirus is everywhere in the environment, but if your puppy just got a shot he is good for 1 month. Then you have to boost again for 4 boosts a month apart is what I recommend. I hope this helped! Dr. Lindsay Butzer

HEY! PARVO VIRUS IS SERIOUS. please go to your local veterinarian for help. Thank you! Dr. Lindsay Butzer

Hey! If they have had parvovirus already that is the best vaccine and they actually never need vaccines again. They are immune to it now! I hope this helps. Dr. Lindsay Butzer

Hey! I am so so sorry. Parvovirus is a deadly virus and your puppy may only survive being hospitalized at a veterinary hospital with critical care. The only thing over the counter to help with vomiting is Pepcid (famotidine) 1mg per pound dose. Immodium can be given 1/2 tablet twice a day to the puppy to to help with diarrhea. Pedialyte for fluids around the clock. Im really sorry, but you need to see a local veterinarian. Dr. Lindsay Butzer

Hey! Unfortunately LRS or lactated Ringers which is fluid you can administer subcutaneously to your sick puppy is a prescribed medication of electrolytes and fluids for hydration. Please explain your situation to a local veterinarian and you should be able to get the fluids, but you will probably need to bring the pet in for them to examine it. I hope this helps! Dr. Lindsay Butzer

Your veterinarian may be able to show you how to give subcutaneous fluids, but At home treatment is not recommended unless treatment at your vet is simply not an option at all. Here is a link to our article about treating parvo virus, with a section about at-home care: https://www.1800petmeds.com/education/parvovirus-treatment-dogs-30.html

Here is a link to our article about treating parvo virus, with a section about at-home care: https://www.1800petmeds.com/education/parvovirus-treatment-dogs-30.html At home treatment is not recommended unless treatment at your vet is simply not an option at all. Your veterinarian will have injectable medication (like Cerenia) to treat the nausea if you are going in intermittently for fluids. Nothing over-the-counter works very well because it is oral and just gets thrown up or not absorbed very well by the gastrointestinal tract.

At home treatment is not recommended unless treatment at your vet is simply not an option at all. Here is a link to our article about treating parvo virus, with a section about at-home care: https://www.1800petmeds.com/education/parvovirus-treatment-dogs-30.html

Reglan can help with nausea, but there are stronger medications now (like cerenia) that we use fo rthat. IV fluids and injectable antibiotics are the core/base treatment though.

It really depends on the heat and humidity inside your house but parvo is a very stable virus so potentially many months. Bleach is a good disinfectant to use that will kill it. A well-vaccinated dog that is over one year of age and has a normal immune system probably wouldn't get very sick from coming into contact with parvo.

The third vaccine should have been given 3-4 weeks after the second, but don't worry, the vaccines he has been given have stimulated his immune system a little, he just isn't considered fully vaccinated yet and technically needs 2 more vaccines spread appropriately out by 3-5 weeks.

No, flies cannot transmit parvo. It is a very stable virus that primarily lives in soil. If he has finished his entire puppy vaccine protocol (usually 2-4 total vaccines separated by 3-4 weeks) and is 11 months old, he has past the window where they usually acquire it, so he is probably safe now.

Thankfully patvo is rare in dogs over a year of age, but there are many other possibilities. Determining the underlying cause of the diarrhea is ideal. Start by having your veterinarian analyze multiple different fecal samples looking for intestinal parasites. There are so many causes, I will attach a link to our article about diarrhea that goes over many of those causes and discusses various treatments, both over-the-counter and prescription: https://www.1800petmeds.com/education/diarrhea-dog-cat-30.html

I need more information to really offer any advice. With "weak and sick" as the only clinical signs, I can't tell what is going on.