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Hot tub legionellosis
A Tolentino1, S Ahkee, J Ramirez
1Division of Infectious Diseases, University of Louisville, School of Medicine, KY, USA.
The Journal of the Kentucky Medical Association
|September 1, 1996
Summary
Pontiac fever, an influenza-like illness, can result from exposure to Legionella pneumophila. A case highlights the importance of epidemiologic history and hot tubs as potential sources of this Legionella infection.
Area of Science:
- Infectious Diseases
- Environmental Health
- Public Health
Background:
- Legionella pneumophila causes Legionnaires' disease and Pontiac fever.
- Pontiac fever is an influenza-like illness without pneumonia, often self-limiting.
- Aquatic environments can harbor Legionella bacteria.
Observation:
- A 37-year-old woman presented with symptoms of sore throat, fever, headache, and myalgia.
- Initial symptoms worsened, leading to hospitalization for shortness of air, though chest X-ray was normal.
- Further investigation revealed recent hot tub use, with water testing positive for L. pneumophila.
Findings:
- The patient was diagnosed with Pontiac fever after re-hospitalization.
- Treatment included erythromycin and rifampin.
- Her illness was linked to a contaminated hot tub, which also caused milder illness in her children.
Implications:
- Complete epidemiologic history is crucial for diagnosing respiratory infections.
- Contaminated hot tubs represent a significant environmental source for Legionella transmission.
- Early identification of environmental sources can prevent further cases and outbreaks.