A 15-year-old Negro boy suffered a recurrent Herpesvirus hominis infection at the site of a former smallpox vaccination. The virus was isolated from the vesicle bases during the third crop of vesicles to appear in three years.
Warren WS, Salvatore MA. Herpesvirus hominis Infection at a Smallpox Vaccination Site. JAMA. 1968;205(13):931-933. doi:10.1001/jama.1968.03140390055018