A vaccine is a preparation of either killed or altered microorganisms that is administered into the body. The vaccine stimulates the immune system to learn how to fight the microorganism so that if the microorganism is encountered in the future, the dog will either not get sick or will have less severe illness.
Recent advances in veterinary medical science have resulted in an increase in vaccines available for cats. Improvements are continuously being made in vaccine safety and effectiveness.
Rabbit hemorrhagic disease virus (RHDV) is a type of calicivirus that specifically attacks rabbits.