Transmission route Treponema pallidum enters the human body from intact mucosa and scraped skin, invades nearby lymph nodes for several hours, and spreads to the whole body through blood circulation in 2-3 days.

Sexual contact infection accounts for 95%. It is mainly transmitted through sexual intercourse. Treponema pallidum exists in a large number of damaged surfaces of skin and mucosa, as well as in saliva, milk, semen and urine. Untreated patients are the most contagious within one year of infection, and the infectivity becomes weaker with the extension of the disease. Sick for more than four years, not through sexual contact. It can also invade through dry skin and intact mucous membranes. A few people can get infected through close contact such as kissing and breastfeeding, but the contact site must be attached to Treponema pallidum. Because Treponema pallidum is anaerobic, it is not easy to survive in vitro and is extremely sensitive to dryness, so the possibility of indirect infection through various utensils is very small. If the blood donor is a syphilis patient during blood transfusion, it can be transmitted to the recipient. Congenital syphilis is transmitted to the fetus by pregnant women with syphilis through placental blood circulation. Generally, in the first four months of pregnancy, due to the protective effect of trophozoites, Treponema pallidum cannot pass through, so the fetus is not infected in the first four months of pregnancy. After the trophozoites atrophy, Treponema pallidum can enter the fetus through the placenta and infect the fetus.

If your skin is damaged, there is a possibility of infection. ..