Legionnaires’ Disease | Causes, Pathophysiology, Symptoms, Diagnosis, Treatment

The video provides a comprehensive overview of Legionnaires disease, an atypical pneumonia caused by Legionella pneumophila. It discusses the epidemiology, risk factors, and transmission of the disease, highlighting its prevalence in late summer and early fall. The pathophysiology is explained, focusing on how the bacteria spread through aerosolized water particles and survive inside cells. Clinical features include high fevers, cough, and neurological symptoms. Diagnosis is primarily through urinary antigen tests, and treatment involves antibiotics like levofloxacin or azithromycin.

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