Chlamydial infections.
D002690:Chlamydia Infections / Q000517:prevention & control / Q000635:transmission*; D002692:Chlamydia trachomatis / Q000302:isolation & purification; D005260:Female; D006801:Humans; D008297:Male; D008396:Maryland; D012749:Sexually Transmitted Diseases / Q000517:prevention & control*