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Published on: November 22, 2013
Legionella pneumophila serogroup 3 infection: importance of serology
N Khanna1, A Meikle, L Gillespie
1Department of Bacteriology, Southern General Hospital, Glasgow, Scotland, UK. nitish.khanna@nhs.net
Abstract:
We present a case of Legionella pneumophila serogroup 3 (LP3) infection in a patient with severe community-acquired pneumonia (CAP). The diagnosis was complicated by an initial equivocal L. pneumophila urinary antigen test, followed by two negative samples. LP3 was cultured from a sputum sample and the diagnosis was confirmed by serology 15 days into the admission. This case highlights the importance of considering non-LP1 serogroups as causes of CAP and the role of serological testing in diagnosis.
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