Journal Article

Infection Due to <i>Legionella</i> Species Other Than <i>L. pneumophila</i>

Robert R. Muder and L. Yu Victor

in Clinical Infectious Diseases

Published on behalf of Infectious Diseases Society of America

Volume 35, issue 8, pages 990-998
Published in print October 2002 | ISSN: 1058-4838
Published online October 2002 | e-ISSN: 1537-6591 | DOI:
Infection Due to Legionella Species Other Than L. pneumophila

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In addition to Legionella pneumophila, 19 Legionella species have been documented as human pathogens on the basis of their isolation from clinical material. Like L. pneumophila, other Legionella species are inhabitants of natural and man-made aqueous environments. The major clinical manifestation of infection due to Legionella species is pneumonia, although nonpneumonic legionellosis (Pontiac fever) and extrapulmonary infection may occur. The majority of confirmed infections involving non-pneumophila Legionella species have occurred in immunosuppressed patients. Definitive diagnosis requires culture on selective media. Fluoroquinolones and newer macrolides are effective therapy. A number of nosocomial cases have occurred in association with colonization of hospital water systems; elimination of Legionella species from such systems prevents their transmission to susceptible patients. It is likely that many cases of both community-acquired and nosocomial Legionella infection remain undiagnosed. Application of appropriate culture methodology to the etiologic diagnosis of pneumonia is needed to further define the role of these organisms in disease in humans.

Journal Article.  6622 words.  Illustrated.

Subjects: Infectious Diseases ; Immunology ; Public Health and Epidemiology ; Microbiology

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