What is Legionnaires' disease? Deadly outbreak prompts health alert in Sydney CBD - Check causes, symptoms and high-risk age groups

A fourth case of Legionnaires' disease has been confirmed in Sydney's CBD, prompting a health alert. Individuals who spent time in the Clarence Street area between December 9 and 18 are urged to monitor for symptoms. Investigations are ongoing to identify the source of the outbreak, with cooling towers being inspected.