6. California
Rate of Chlamydia per 100,000 people: 487.5
Rate of Gonorrhea per 100,000 people: 139.5
Rate of Syphilis per 100,000 people: 12.6
Insider Monkey Score: 3.33
In 2015, nearly a quarter of a million STD cases were reported in the state of California, and was the second straight year in which the rates for all three diseases increased significantly. The main reasons behind this increase in STDs are the facts that condom use is on the decline in the state, and that people prefer to have multiple partners instead of boring old monogamy. Men who have sex with men are the people most likely to be at risk of the diseases, and they accounted for 62% of the total gonorrhea diseases and 84% of both primary and secondary syphilis in the male population of the state.
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