Syphilis Transmission: Can You Get It Without Sexual Contact? - Urology

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Syphilis transmission


Hello, last week I had a health check-up, and when the report came out, the doctor informed me that I had previously contracted syphilis, but I was completely unaware of it and have never engaged in sexual intercourse.
I looked online and did not find any of the symptoms mentioned on the internet (I have never experienced any).
Could it be that the hospital made a mistake? Also, if I really do have syphilis, how could I have contracted it? Besides sexual contact and blood transfusion, are there other transmission routes for syphilis?

Nana, 20~29 year old female. Ask Date: 2016/04/30

Dr. Li Xinyi reply Urology


Take the values to the urologist for discussion.

Reply Date: 2016/04/30

More Info


Syphilis is a sexually transmitted infection (STI) caused by the bacterium Treponema pallidum. It is primarily transmitted through sexual contact, but there are other potential routes of transmission that are important to understand. Your situation raises several critical points regarding syphilis transmission, especially in the context of not having engaged in sexual activity.

Firstly, it is essential to clarify that while sexual contact is the most common way syphilis is transmitted, there are other less common ways that one might acquire the infection. For instance, syphilis can be transmitted from an infected mother to her child during pregnancy or childbirth, a condition known as congenital syphilis. This can occur even if the mother does not exhibit symptoms of the disease. Therefore, if you have a history of maternal syphilis or if your mother had syphilis during pregnancy, this could be a potential route of transmission.

Another potential, albeit rare, mode of transmission is through direct contact with syphilis sores or lesions. These sores can occur on the genitals, anus, or mouth, and if you were to come into contact with them, there is a risk of transmission. However, this typically requires direct skin-to-skin contact with an infected area, which is not likely to occur without some form of sexual activity or intimate contact.

Regarding your concern about the accuracy of your diagnosis, it is crucial to consider that false positives can occur in syphilis testing, especially with non-treponemal tests (like the RPR or VDRL). These tests can yield positive results due to various factors, including other infections, autoimmune diseases, or even pregnancy. If you have never engaged in sexual activity and have no symptoms, it would be prudent to discuss this with your healthcare provider. They may recommend further testing, such as treponemal tests (like the FTA-ABS), which are more specific for syphilis and can help confirm or rule out the diagnosis.

In summary, while sexual contact is the primary mode of syphilis transmission, there are other potential routes, including congenital transmission and direct contact with sores. If you have been diagnosed with syphilis but have never engaged in sexual activity, it is essential to consult with your healthcare provider for further evaluation and testing to confirm the diagnosis and understand the possible sources of infection. It is also vital to maintain open communication with your healthcare provider about your concerns and any potential risk factors you may have encountered in your life.

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