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March 1982

Pneumonic and Nonpneumonic Forms of Legionellosis: The Result of a Common-Source Exposure to Legionella pneumophila

Author Affiliations

From the Departments of Medicine (Drs Girod, Reichman, and Dolin) and Pathology (Dr Winn), University of Vermont College of Medicine; and the Vermont State Health Department (Drs Klaucke and Vogt), Burlington.

Arch Intern Med. 1982;142(3):545-547. doi:10.1001/archinte.1982.00340160125024

Two male maintenance workers contracted legionellosis while cleaning the interior of a cooling tower contaminated with Legionella pneumophila. In one man severe, life-threatening Legionnaires' disease developed, whereas the other experienced a comparatively mild, self-limited illness that was consistent with previous descriptions of cases of Pontiac fever. This report represents the first documentation of the development of both of these syndromes following exposure to a common source of the organism. The implications of this observation for the pathogenetic mechanisms that underly the different clinical manifestations of legionellosis are discussed.

(Arch Intern Med 1982;142:545-547)