Yes. Although kissing is considered a lower-risk kind of sexual act when compared to sexual intercourse and oral sex, it can transmit CMV, hepatitis B, herpes, and syphilis. CMV and hepatitis B can be present in saliva, and herpes and syphilis can be transmitted through skin-to-skin contact, particularly at times when sores are present.
i got this from a website called
http://eu.staying-alive.org/stayinga...red/getArticle
it has got loads on it if you want to read up on it.
hope this helps