The FVRCP vaccination protects kittens and cats from feline viral rhinotracheitis, calicivirus and panleukopenia, according to the Chatsworth Veterinary Center. It is not a single vaccine, but rather a series of four, which are typically first given within the first two months of a kitten's life, then yearly as a booster. Getting the vaccine helps to keep the animals from contracting the potentially life threatening illnesses.
Many young cats suffer from an upper respiratory infection known as feline viral rhinotracheitis. The FVRCP vaccination protects cats and kittens against the unpleasant symptoms of this disease, which include respiratory distress.
Calicivirus is a contagious infection linked to multiple feline diseases. Panleukopenia, the third disease against which the FVRCP vaccination guards, is analogous to parvovirus, which infects dogs, and the mortality rate for infected cats ranges from 50 to 90 percent, depending on the age of the individual. Cats who do not receive the FVRCP vaccination are more vulnerable to each of these conditions.