Analysis of saliva samples from individuals aged ≥ 60 years who had a history of zoster (group 1), zoster and postherpetic neuralgia (PHN; group 2), or no history of zoster (group 3) revealed varicella zoster virus (VZV) DNA in saliva samples from 11 of 17 individuals in group 1, 10 of 15 individuals in group 2, and 2 of 17 individuals in group 3. The frequency of VZV DNA detection was signific...