Sex Parasite Is Most Common in Women Older Than 40, Study Finds

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A sex disease that’s more prevalent than gonorrhea and chlamydia, and less well-known, is suffered by 13 percent of women aged 50 and older, a study found.

The sexually transmitted parasite Trichomonas vaginalis causes urogenital infection, and can raise susceptibility to HIV. A study, reported at the International Society for STD Research in Quebec City, found the infection is twice as prevalent in those over 40 than in younger women because it isn’t adequately screened for. Women in their 40s had an 11 percent infection rate, according to the data.