Vaccination A live-attenuated varicella vaccine is available in 3 formulations in the US: Standard dose varicella vaccine Combination measles-mumps-rubella-varicella (MMRV) vaccine Higher dose vaccine used to prevent herpes zoster (see herpeszoster vaccine) All healthy children and susceptible adults should receive 2 doses of live-attenuated varicella vaccine (see Table: Recommended Immunization Schedule for Ages 0 - 6 Years and Recommended Immunization Schedule for Ages 7 - 18 Years).