 Some of these children may develop a mild chickenpox also known as breakthrough disease.Another vaccine, known as zoster vaccine, is simply a larger-than-normal dose of the same vaccine used against chickenpox, and is used in older adults to reduce the risk of shingles (also called herpes zoster) and postherpetic neuralgia, which are caused by the same virus.The live zoster (shingles) vaccine is recommended for adults aged 60 years and older.