Get your puppy there vaccinations !

Puppies do not have antibodies to diseases, except in very small amount, from their mother while in the uterus, like members of some species (humans, for instance). Antibodies to protect against disease are passed from the mother to the puppies through the first milk produced, called the colostrum. Puppies can only absorb antibodies for the first 24 to 36 hours of life. After that, they can no longer absorb antibodies.

There are a number of ways that this process of passing on antibodies can fail. The puppy may not nurse the first day of life. The mother may self nurse or liak colostrum, using it up. The puppy may be the last puppy to nurse and the antibody containing colostrum may have been used up by the other puppies. So one puppy may have very good protection against parvovirus, while another puppy has little or no protection. Over time, the maternal antibodies are broken down, used up or otherwise rendered inactive by the puppy. As this protection wears off, the puppy becomes susceptible to the disease.