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Originally Posted by Ladymom  Is your backyard fenced so no other dogs can get to it? Viruses like parvo can live on surfaces for many months so you don't want her to go anywhere other dogs have been.
When was she weaned? When did she get her first shot? Puppies get maternal antibodies from nursing which stay in the body for several weeks after weaning. Those immunities will kill the viruses in the vaccination, making them worthless if they are given too young. Puppies need three rounds of vaccinations with the last one being around 16-18 weeks to be fully immunized. In one study of a cross section of different puppies the age at which they were able to respond to a vaccine and develop protection covered a wide period of time. At six weeks of age, 25% of the puppies could be immunized. At 9 weeks of age, 40% of the puppies were able to respond to the vaccine. The number increased to 60% by 16 weeks, and by 18 weeks of age, 95% of the puppies could be immunized. Parvovirus: Serious Diarrhea in Puppies & Dogs |
She got her first shots at 7.5 weeks old. She's 9 weeks now. I'm guessing she was weaned a week or two ago.