Mycoplasma Genitalium (M. gen)

Mycoplasma genitalium (M. gen) is a sexually transmitted bacteria that can be passed from one person to another during vaginal and anal sex. M. gen was discovered in 1980 and is now recognized as one of the most common causes of certain sexually transmitted infections in men and women. Infections due to M. gen occur primarily in the urethra and the cervix. We know that M. gen also lives in the anus/rectum but we don’t yet know if it plays much of a role in sexually transmitted anal infections (proctitis).  The US food and drug administration (FDA) approved a diagnostic test for M. gen in 2019, and so we now have a way to test people for this sexually transmitted infection.

Mycoplasma Genitalium (M. gen) Facts Sheet
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Using condoms consistently and correctly for oral, vaginal and anal sex is your best bet for staying sexually healthy.

If you’re thinking of having sex with a new partner:

1. Talk about STIs, including when each of you were last tested.

  • Women up to age 25 should be tested for certain STIs at least annually.
  • Men who have sex with men should be tested every 3 months
  • Men who have sex with women up to age 25 should be tested in certain situations, for instance if you’ve had an STI in the past, have a partner with an STI, or you live in an area where your chances of getting an STI are high.

2. Male and female condoms are effective in reducing the risk of M. gen, most other sexual infections and HIV.

3. Do not have sex if you or a sexual partner has abnormal discharge, burning with urination, or any other symptom that could be due to an STI.

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