Rabbits require regular check ups and vaccinations to keep them healthy. In Australia we vaccinate against the rapidly fatal Rabbit Calicivirus Disease.
This virus is spread through close contact with infected rabbits and also through spread by biting insects. The virus is used by the government to control feral rabbit populations and is regularly released for this purpose.
Immunity against this disease requires six monthly booster injections of the CYLAP vaccine. Young rabbits can be started on the vaccine from 4 weeks, in high risk situations, and again at 10 to 12 weeks of age.