infectious diseases
Chlamydia
Key Points
C. trachomatiscauses trachoma or STIs; maternal transmission can cause neonatal conjunctivitis and/or pneumonia. C. pneumoniaecan cause pneumonia (especially in children and young adults and in enclosed populations). C. psittaciis a rare cause of pneumonia (psittacosis) that is usually acquired from psittacine birds (eg, parrots). DiagnoseC. trachomatisandC. pneumoniaeinfections using nucleic acid amplification tests. Screen high-risk, asymptomatic patients for sexually transmitted chlamydial infection. Treat nonpregnant people withdoxycycline, and treat pregnant women withazithromycin. 