Holly had hers at 8 weeks and the 2nd at 9weeks and 5 days by the breeder and my vet said I had to do the second one agian as it was too early and may not have been covered. She rang the company that make the vaccine and they said she was right and I had to have it done again for the sake of 2 days. Obviously her safety came first so I did, as Parvo is very bad.