Quote:
Originally Posted by Ladymom  Is there a leash law in your neighborhood?
A member on another forum nearly lost her little Tucker to parvo. He got it from his own backyard. Loose dogs in the neighborhood used his backyard for their bathroom. 
BTW, Tucker had had all three parvo shots, too. They were started too early, though, so they weren't effective. If they are started before about nine weeks, immunities the puppy gets from nursing block their effectiveness.
The last vaccine should be given between 16-18 weeks. 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 |
yes there are leash laws in my city. Plus there are never any stray dogs or cats running around. Morgan got her vaccines at 8, 12, and 16 weeks. No problems here.
Common sense should be used. If your backyard isn't fenced and other dogs have access to it then of course one should be careful about letting their not fully vaccinated puppy in the yard.