1, basically be to pass sexual contact to infect. Herpes virus (Hsv) classics mucous membrane or skin damaged enter human body, preexistence entry point grows progenitive, classics blood goes after or nerve access is sowed medicinal powder. This ill infectivity is extremely strong.

2, every and the woman that have the male of phallic bleb to produce one-time contact, 60%~80% can send this disease.

3, minority can be infected through contaminative article.

4, new student can affect via be being produced.