Final answer:
Untreated chlamydia can cause sterility in both sexes.
Step-by-step explanation:
If left untreated, chlamydia can cause sterility in both sexes. Chlamydia is a sexually transmitted infection caused by the bacteria Chlamydia trachomatis. In women, chlamydia can lead to pelvic inflammatory disease (PID), which can result in infertility. In men, untreated chlamydia can cause epididymitis, which can also lead to infertility.
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