chlamydia

(Newser) - All DC high school students will be offered testing for sexually-transmitted diseases, the Washington Post reports. The move follows a pilot program at eight schools last year in which 13% of 3,000 students tested positive for STDs, mostly chlamydia and gonorrhea. The new plan says students must watch a...

(Newser) - After declining in 1991-2005, the US teen birth rate climbed in 2006 and 2007, HealthDay News reports. Crunching numbers from 2002-07, the Centers for Disease Control found a number of trends had flatlined or worsened after a period of improvement.

• 2004 saw 745,000 pregnancies among females under 20, including

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(Newser) - Known cases of chlamydia in the US have topped a million for the first time, with the highest rates among adolescent girls, USA Today reports. Under-reporting of the sexually transmitted disease means the real number could be nearly three times higher. Syphilis and gonorrhea are also on the rise, partly...

(Newser) - Chlamydia makes men infertile too, a new study finds. Spanish scientists say that infected sperm has three times more damage, or DNA fragmentation, as healthy sperm. Its density, shape and swimming ability also decline. But an antibiotics treatment repaired the damage by 36% over 4 months, and almost 90% of...