Will it hurt my dog to get another parvo vaccine if he's had one?

Most adult dogs that were appropriately vaccinated against parvo as puppies - meaning 3 different vaccinations, given no earlier than 8 weeks of age and proceeding at 3 - 4 week intervals - are protected against contracting parvovirus, as long as they receive booster vaccinations as recommended. Typically, the recommendation is one vaccination on the one year anniversary of the last puppy vaccination, and then re-vaccination every 3 years after. Just one parvo vaccination is unlikely to be completely effective, but it may provide some protection, and if he contracts the disease it will likely be a milder form.

Yes, there are some distemper/parvo vaccines that can safely be given every 3 years. Puppies though need a series of vaccines to help build their immune system. Adults that have previously had vaccines can receive this vaccine every 3 years IF that is the type of vaccine that was given. I would contact the vet where he received the last vaccine and ask them whether they give the 1 or 3 year distemper/parvo vaccine to just make sure. I hope this helps!

The differences between them are the addition of Corona virus vaccines (6 in 1) and Leptospirosis vaccines (7 in 1). You can use any of them. Be sure he gets two separated by 3 weeks. Ideally, he should be examined by a veterinarian to confirm good health since a sick dog should never be vaccinated.

Yes, I would definitely get your 18 year old revaccinated for parvo. She can get it from the puppy, as the puppy will not likely be fully vaccinated for it. It's best for her protection to have this vaccine given again.

Yes, Koa does need a booster shot, but these should be given four weeks apart to incur immunity. Because it's been two months since he last shot, he will need to start the series over again. You can bring him into a Vetco vaccine clinic to get it done.

Parvo can live for up to one year in the environment. I would not risk getting another puppy; an adult dog, yes. If you decide to get another puppy it is up to you but it would need to be FULLY vaccinated, meaning it is at least 4 months of age and has received 3-4 distemper/parvo vaccines at the proper intervals (3-4 weeks apart). Otherwise you are risking this new pups life.

Vaccine recommendations to partially depend upon his lifestyle and where you live. Also, that second vaccine should have been given in a 2 to 4 week window from the initial vaccine. If it was given later than four weeks after the first vaccine, he will need booster vaccines within a 2 to 4 week window. Assuming he was given the vaccines at the appropriate time, Kai should get another DHLPP and a rabies vaccine. If he gets groomed, goes to the park or has contact with other dogs in general, you may consider getting a kennel cough vaccine. Other vaccines are for Lyme disease and Influenza (dog flu). Your local veterinarian can discuss if these diseases are present in your area and what potential risk factors exist. You may be able to find lower cost vaccinations at a low-cost vaccine clinic or a vaccine clinic in general. You can generally find information online. Please feel free to post any additional questions.