Chlamydia. An unheralded epidemic.
D002690:Chlamydia Infections / Q000191:economics / Q000453:epidemiology* / Q000635:transmission; D003365:Costs and Cost Analysis; D005260:Female; D006801:Humans; D008297:Male; D000292:Pelvic Inflammatory Disease / Q000209:etiology; D012749:Sexually Transmitted Diseases / Q000453:epidemiology*; D014481:United States