Adult house cats at a low risk of disease exposure should receive booster vaccinations every three years. (vetsaverspethospital.com)
They should however, be kept isolated indoors where disease exposure is should not be a problem. (2ndchance.info)
While that may be occasionally true, no one is entirely convinced that your pet's lifestyle and disease exposure account for the great majority of failing kidneys that veterinarians see. (2ndchance.info)