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Pontiac fever (Legionella Pneumophila)
Related Subjects:Pneumonia |Pontiac fever (Legionella Pneumophila) |Legionella Pneumophila pneumonia
🦠 Pontiac Fever is a mild, flu-like illness caused by Legionella bacteria. Unlike Legionnaires’ disease, it does not cause pneumonia and is usually self-limiting.
📌 About
- 🌡️ Mild flu-like illness due to Legionella.
- Most cases appear during outbreaks of legionellosis.
🧬 Aetiology
- Caused by inhalation of aerosols from contaminated water systems (e.g. spa pools, air conditioning, fountains).
- 💧 Transmission is environmental — not person-to-person.
🩺 Clinical Features
- 🤕 Headache.
- 💪 Muscle aches.
- 😮💨 Dry cough, mild shortness of breath.
- ❌ No evidence of pneumonia.
- ⏳ Symptoms develop within hours → last 2–5 days → resolve spontaneously.
🧪 Investigations
- 🧾 Bloods: FBC, U&E, LFTs → usually normal.
- 🫁 CXR: no pneumonia.
- 💧 Urine antigen test: can confirm sporadic cases, though more commonly used in Legionnaires’ disease.
💊 Management
- 🛌 Supportive care only (fluids, rest, paracetamol/NSAIDs).
- 🚑 Admission rarely required.
- 📉 Self-limiting → most recover fully within a few days without antibiotics.
📚 References
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