What is the most common ST I caused by bacteria in the US?

The most common sexually transmitted infection (STI) caused by bacteria in the U.S. is Chlamydia. It primarily affects the reproductive organs and can lead to serious health complications if left untreated. Chlamydia is often asymptomatic, which makes regular screening important for sexually active individuals. Other common bacterial STIs include gonorrhea and syphilis, but Chlamydia remains the most frequently reported.