What are the main clinical features of Legionella?

• flu-like symptoms including fever (present in > 95% of patients)
• dry cough
• relative bradycardia
• confusion
• lymphopaenia
• hyponatraemia
• deranged liver function tests
• pleural effusion: seen in around 30% of patients

How is Legionella diagnosed?

urinary antigen

What is the management of Legionella?

erythromycin/clarithromycin

What is the causative bacteria of Legionella?

Legionella pneumophilia - typically colonizes water tanks

What are the CXR findings in Legionella?

• generally non-specific
• a mid-to-lower zone predominance of patchy consolidation
• pleural effusions in around 30%