Chlamydia trachomatis infection in adults with community-acquired pneumonia

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Abstract
Adult patients (52) admitted to a hospital over 11 mo. with symptoms suggesting pulmonary infection were studied. Twenty-nine had pneumonia and none were receiving immunosuppressive drug therapy. Definite serological evidence of recent chlamydial infection was found in 21% (4/19) of patients with pneumonia of unclear etiology and in 0% (0/33) of patients with other pulmonary conditions. An additional 3 patients with pneumonia had suggestive serological evidence of recent chlamydial infection. None of the 7 patients had culture evidence of bacterial infection, or serological evidence of mycoplasmal, viral or Legionella infection; none had physical examination findings suggesting intercurrent chlamydial infection of the eye or genitourinary tract. C. trachomatis may have been a cause of community-acquired pneumonia in some of these patients.