What is the definition or description of: zoster vaccine?

See below:: A vaccine that helps to reduce the risk of getting herpes zoster (shingles) in individuals 50 years of age and older. Zostavax is the only us licensed vaccine that reduces the risk of reactivation of the varicella zoster virus, the same one that causes chicken pox, and remains dormant in the body after recovering from chicken pox.

ZOSTER VACCINE: Also called varicella-zoster vaccine. Varicella-zoster virus is a herpesvirus, morphologically identical to herpes simplex virus, that causes varicella (chickenpox) and herpes zoster in man; varicella results from a primary infection with the virus; herpes zoster results from secondary invasion by the same virus or by reactivation of infection which in many instances has been latent for many years.