infectious diseases
Chlamydia
Chlamydia pneumoniae
C. pneumoniaecan cause pneumonia (especially in children and young adults) that may be clinically indistinguishable from pneumonia caused byMycoplasma pneumoniae. In some patients withC. pneumoniae, pneumonia, hoarseness, and sore throat may precede coughing, which may be persistent and complicated by bronchospasm. Approximately 6 to 19% of Community-Acquired Pneumonia cases are due to C. pneumoniaehas also been implicated as an infectious trigger of reactive airway disease. 