Legionellosis history and symptoms: Difference between revisions
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==History== | ==History== | ||
Legionnaires’ disease typically presents with [[pneumonia]], which usually requires hospitalization and can be fatal in 10%–15% of cases. Symptom onset occurs 2–14 days after exposure. In outbreak settings, <5% of people exposed to the source of the outbreak develop Legionnaires’ disease. | Legionnaires’ disease typically presents with [[pneumonia]], which usually requires hospitalization and can be fatal in 10%–15% of cases. Symptom onset occurs 2–14 days after exposure. In outbreak settings, <5% of people exposed to the source of the outbreak develop Legionnaires’ disease. | ||
Revision as of 14:03, 12 December 2012
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
History
Legionnaires’ disease typically presents with pneumonia, which usually requires hospitalization and can be fatal in 10%–15% of cases. Symptom onset occurs 2–14 days after exposure. In outbreak settings, <5% of people exposed to the source of the outbreak develop Legionnaires’ disease.
Pontiac fever is milder than Legionnaires’ disease and presents as an influenza like illness, with fever, headache, and myalgias, but no signs of pneumonia. Pontiac fever can affect healthy people, as well as those with underlying illnesses, and symptoms occur within 72 hours of exposure. Most patients fully recover. Up to 95% of people exposed in outbreak settings can develop symptoms of Pontiac fever.
Common Symptoms
Symptoms of Legionnaires' disease may include:
- Chest pain
- Coughing up blood
- Fever
- Gastrointestinal symptoms, such as diarrhea, nausea, vomiting, and abdominal pain
- General discomfort, uneasiness, or ill feeling (malaise)
- Headache
- Joint pain
- Lack of coordination (ataxia)
- Loss of energy
- Muscle aches and stiffness
- Nonproductive cough
- Shaking chills
- Shortness of breath
Less Common Symptoms
A milder infection caused by the same type of Legionella bacteria is called Pontiac Fever. Symptoms may also include
However, there is no pneumonia.