US rates of chlamydia continue to climb, CDC reports
CHICAGO - The number of Americans newly diagnosed with chlamydia continued to rise in 2011, likely due to increased screening and more sensitive tests, while rates of syphilis remained unchanged and rates of gonorrhea hovered at near-historic lows, US health officials said on Thursday.
According to the US Centers for Disease Control and Prevention's annual report on sexually transmitted diseases, which tracks cases of the three reportable STDs - chlamydia, gonorrhea, and syphilis - young people and gay and bisexual men continue to be most affected by STDs.
In 2011, gay and bisexual men made up nearly three-quarters, or 72 percent, of all cases of syphilis. Young people had the most cases of chlamydia and gonorrhea, the CDC report found.