Herpes is spread through unprotected sexual contact (oral sex, rimming or anal sex) and direct contact with the blister or sore.
Malengelenge ya herpes yanaenezwa kupitia mgusano ngozi kwa ngozi kwa mufaano ngono, ikiwa ngono ya mdomo, ya mume kwa mume au mume na muke na mgusano wa moja kwa moja na kidonda.