Viruses belonging to the family of Herpesviridae, a family of enveloped, linear, double-stranded DNA viruses infecting a wide variety of animals. Subfamilies, based on biological characteristics, include: alphaherpesvirinae, betaherpesvirinae, gammaherpesvirinae. Description adapted from: https://www.ncbi.nlm.nih.gov/mesh/68006566 & https://www.ncbi.nlm.nih.gov/mesh/68006564.