<prompt> Herpes - Zoster is caused by -Herpes - simplex type IHerpes - simplex type IIEpstein - barr virusVaricella  <response>: Herpes zoster usually occurs in person who had chickenpox several years earlier,which is caused by varicella REF:ANANTHANARYANAN TEXTBOOK OF MICROBIOLOGY 9th EDITION PGNO.472 