If your kittens were not able to nurse during the first three days of life, they will not have received proper immunity from their mother. (vcahospitals.com)
A. Kittens and puppies need a series of vaccines to m ake sure that they build proper immunity to diseases. (eastorangevet.com)
To provide your cat with proper immunity, FeLV vaccine needs to be given twice during the first year and once - a-year afterwards. (centralbrowardvet.com)