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Abstracts |

Mycoplasma Pneumoniae.

Robert M. Chanock, M.D.
Ann Intern Med. 1964;60(4):733-734. doi:10.7326/0003-4819-60-4-733_4
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Nonbacterial pneumonia is a syndrome of multiple etiology. In certain age groups and ecologic settings adenovirus, parainfluenza, and respiratory syncytial viruses may play an important role. A large segment of this syndrome still awaits an etiologic explanation. The viral agents just described are not active in those nonbacterial pneumonia illnesses in which a cold agglutinin response occurs during convalescence.

During the past 5 years epidemiologic and volunteer studies have established that the organism originally described by Eaton and associates in 1944, is the etiologic agent in a majority of cold agglutinin positive pneumonia illnesses. Recently the Eaton agent has been


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