The act of giving a vaccine. A term often used to describe a condition in which an animal who was vaccinated against a disease still gets the disease. In truth, there is usually nothing wrong with the vaccine, but for some reason the animal's immune system did not adequately react to it. The smallest form of life, invisible with an ordinary microscope. An infectious unit that enters and uses cells of plants or animals for replication.
Some viruses cause disease in animals or plants.
A time period in the life of a young animal in which the maternal antibodies are too low to provide protection against a certain disease but too high to allow a vaccine to work and produce immunity. Recommendations for Feline Leukemia Virus Testing. The Compendium on Continuing Education for the Practicing Veterinarian. Vaccine-associated feline sarcoma symposium. Inc. July 25, 1998.