What sexually transmitted infection is caused by bacteria?

• A. Chlamydia
• B. Gonorrhea
• C. Syphilis
• D. Herpes

Answer: (A)

Chlamydia is a sexually transmitted infection (STI) caused by the bacterium Chlamydia trachomatis. This infection is one of the most common STIs and can lead to serious reproductive complications if left untreated. Chlamydia often does not present symptoms, which makes regular screening important, especially for sexually active individuals.

Both gonorrhea and syphilis are also bacterial STIs, but the question specifically highlights chlamydia. Herpes, on the other hand, is caused by a virus (specifically the herpes simplex virus), distinguishing it from the bacterial infections mentioned in the other options. Understanding the nature of these infections is crucial in recognizing their treatment and prevention methods, as bacterial STIs can often be treated with antibiotics, while viral STIs require different management approaches.