Legionnaires’ Disease

Diagnosis

Diagnosis of Legionnaires’ disease can be challenging because it resembles other forms of pneumonia. To quickly identify legionella bacteria, a urine test may be used to detect antigens that trigger the immune response. Additional tests may include:

• Blood tests

• Chest X-ray to see the extent of infection in the lungs

• Tests that examine sputum or lung tissue samples

These tests help confirm the infection and guide appropriate treatment.

Treatment

Treatment for Legionnaires’ disease involves antibiotics. Starting treatment early reduces the risk of serious complications, and many people may require a hospital stay for proper care.

Pontiac fever, a milder form of legionella infection, does not require treatment. It typically resolves on its own and does not lead to long-term problems.