Chlamydia trachomatis and the respiratory tract.
D002690:Chlamydia Infections / Q000382:microbiology*; D002692:Chlamydia trachomatis / Q000302:isolation & purification*; D006801:Humans; D007223:Infant; D009305:Nasopharynx / Q000382:microbiology; D011014:Pneumonia / Q000382:microbiology*; D014132:Trachea / Q000382:microbiology