Condoms also provide some protection against herpes, syphilis and chancroid, but genital ulcer STIs can also be transmitted by contact with exposed infected skin.

• 避孕套提供了一些保护以防止疱疹、梅毒和软下疳，但是生殖器溃疡的性病也能通过与受感染的皮肤接触而传染到。