"Booster vaccinations" refer to additional doses of vaccines given to strengthen the immune response and extend the protection provided by the initial vaccination. Full definition
Adult dogs and cats require annual booster vaccinations as well as an annual rabies vaccination. (maconbibb.us)
Depending on the vaccine schedule you and your veterinarian choose, your pup will have another one or two visits spaced 2 to 4 weeks apart for booster vaccinations. (dogtopia.com)
Adult cats at a high risk of disease exposure should receive booster vaccinations annually. (vetsaverspethospital.com)