A Legionnaires' disease outbreak in New York City has sickened 74 people and resulted in three deaths. Health officials are advising anyone who recently visited the impacted area and experiences flu-like symptoms to seek medical evaluation promptly. Legionnaires' disease is a serious type of pneumonia triggered by inhaling aerosolized water droplets contaminated with Legionella bacteria. Unlike influenza or COVID-19, it does not typically transmit directly from person to person. Legionella bac