Is saliva transmission syphilis high?

Syphilis transmission through saliva is not high.

Syphilis is mainly transmitted through sexual contact, which is the most important route of transmission. During sexual contact, direct skin-mucosal contact can lead to transmission of Treponema pallidum. Blood transmission is also important, such as sharing syringes, transfusion of contaminated blood, etc. Although saliva may theoretically contain small amounts of Treponema pallidum, transmission through saliva is rare. This is because the number of pathogens in saliva is usually small, and the intact oral mucosa has a certain barrier effect on pathogens and can prevent their invasion to a certain extent. However, it should be noted that if the mouth is damaged, ulcerated, etc., The risk of contracting syphilis through saliva may increase. At this time, Treponema pallidum in saliva may more easily enter the body and cause infection.