What is the earliest age that I can bring my puppy or kitten for vaccination?
The age at which puppies or kittens can be immunized and protected effectively depends on the level of maternal antibodies in the bloodstream of the puppy. High levels of maternal antibodies will inactivate the vaccine and it is good to vaccinate when the level drops. When the level is low enough, immunization with commercial vaccines will work. The timing in which puppies can be effectively immunized varies in each individual but most studies show that they can be vaccinated as early as six weeks of age until they are 16 weeks old. It is also suggested that puppies and kittens should be given at least three combination vaccinations and done yearly thereafter.
