Rates of unsafe sex and rectal gonorrhea rise.
D000328:Adult; D006069:Gonorrhea / Q000453:epidemiology*; D006801:Humans; D008297:Male; D012002:Rectal Diseases / Q000453:epidemiology*; D012309:Risk-Taking; D012495:San Francisco / Q000453:epidemiology; D012725:Sexual Behavior