Health officials in New York City have confirmed a second death linked to an outbreak of Legionnaires’ disease affecting Manhattan’s Upper East Side. Authorities reported that dozens of people have been infected as investigators continue efforts to identify and eliminate the source of the outbreak. Legionnaires’ disease is a severe form of pneumonia caused by Legionella bacteria, which can spread through contaminated water systems such as cooling towers, plumbing networks and large air-conditioning systems. The disease is not generally transmitted from person to person, making environmental investigation a critical part of outbreak response. Public health teams have increased testing and monitoring throughout the affected area. Building owners and facility operators are being instructed to inspect water systems and comply with sanitation requirements designed to prevent bacterial growth. Officials have also urged residents experiencing symptoms such as fever, coughing or breathing difficulties to seek medical attention. While most healthy individuals recover with appropriate treatment, older adults and people with underlying health conditions face greater risks of severe illness. The outbreak highlights the importance of maintaining water infrastructure and conducting regular inspections to minimize public health threats in densely populated urban environments.