[jp4m2]

I'm so sorry this happened, I hope you find out what happened. You lost her way too soon RIP baby girl.

I just wanted to say there are multiple reasons why this could happen. Did the breeder do as she said? Was the vaccine properly stored? Did she administer the last vaccine at 12 weeks? If it was at 12 weeks rather than the preferred 16-18 weeks there is a possibility the pup had remaining MDA and it prevented antibodies from forming leaving the pup vulnerable to contract parvo.

There are many cases where pups are contracting parvo even though they where vaccinated. A pup can be vaccinated but not produce immunity. One reason is they are considered "non/ low responders" to the vaccine. If you vaccinate, then two weeks later, do a titer test to see if any antibodies were produced that would be the result you want to see. But, if you run a titer(two weeks after vaccinating) and it is showing no antibodies you may have a non-responder. This pup will always remain at risk for contracting parvo without having any protection.

Dr. Schultz claims there’s a certain ratio in the canine population that will not respond to vaccinations. This is dictated by their genetics and how long that a disease has been present in the population. So you have more parvovirus non-responders in dogs (1:1000) compared to distemper (1:5000).

If we want the some assurance the vaccine produced antibodies is to have a titer run two weeks after the second vaccine, if the vaccine produced the antibodies they way it should have the pup should have adequate protection. Again, I'm so sorry this happened.