In which population group is the incidence of syphilis particularly high, according to recent data from the United States?
Group of answer choices
- Elderly individuals
- Men who have sex with men
- Postmenopausal women
- Heterosexual teenagers
The correct answer is: Men who have sex with men (MSM)
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Explanation:
Recent CDC surveillance data (2022-2023) highlights that syphilis rates are disproportionately high in:
- Men who have sex with men (MSM), particularly those with multiple partners, HIV coinfection, or inconsistent condom use.
- Congenital syphilis has also risen sharply, but the question focuses on incidence (new cases), which is highest in MSM.
Why Not the Others?
- Elderly individuals: Syphilis is uncommon in this group (though underdiagnosis occurs).
- Postmenopausal women: Very low incidence; hormonal changes reduce sexual activity/risk.
- Heterosexual teenagers: Gonorrhea/chlamydia are more prevalent; syphilis is rarer in this group.
Key Statistics:
- MSM account for ~50% of primary/secondary syphilis cases in the U.S.
- HIV coinfection further increases risk due to overlapping risk behaviors.
Thus, MSM are the highest-risk group for syphilis in the U.S.
