which stds are contagious
Chlamydia is a sexually transmitted disease (STD) that is contagious. Chlamydia bacteria cause the most common STD in United States.Approximately 3,000,000 women and men become infected every year. Chlamydia is most common among women and men under the age of 25.hlamydia is a sexually transmitted disease (STD) that is contagious. Chlamydia bacteria cause the most common STD in United States.