What is the definition or description of: shingles vaccine?

Chickenpox shot : Shingles vaccine is a live injectable vaccine against varicella, the cause of chickenpox. This vaccine is intended for adults to increase their protection from reactivation of the virus, which causes shingles.

See below: The shingles vaccine protects your body from reactivation of a virus — the chickenpox (varicella-zoster) virus — that most people are exposed to during childhood. When you recover from chickenpox, the virus stays latent in your body. For unknown reasons, though, the latent virus sometimes gets reactivated years later, causing shingles. The shingles vaccine prevents this reactivation.