Harlem Legionnaires’ Disease Outbreak Declared Over

Health officials in New York City announced on Friday that the outbreak of Legionnaires’ disease in Harlem has officially ended. This declaration came just a day after reporting a seventh death linked to the outbreak, as the number of reported cases ticked up slightly.

According to health officials, there have been no new cases among residents or workers in the affected area since August 9. This lack of new infections allows for the conclusion of the outbreak.

Legionnaires’ disease is a pneumonia type caused by Legionella bacteria, which thrive in warm water and are transmitted through building water systems.

Overall, the outbreak that began in late July saw 90 people hospitalized, with six still receiving care. In total, 114 individuals were reported as infected.

“Today is a positive step for our city, but we also recognize the loss we have experienced,” said Dr. Michelle Morse, the Acting Commissioner of the NYC Health Department. “Our thorough investigation identified two cooling towers that matched the genetic profile of the bacteria found in patients. We’re collaborating with building owners to ensure the health and safety of Harlem residents going forward and to prevent future outbreaks.”

The timing of the last reported death remains unclear, but it marked the seventh since the outbreak’s onset. As of the latest update, six individuals remain hospitalized.

This most recent death occurred earlier in the month outside of New York City, and health officials learned of it during their ongoing investigation that began in late July. The department had reported a previous death on Monday.

The bacteria linked to Legionnaires’ disease was found in 12 cooling towers across 10 different buildings, including a city-operated hospital and a sexual health clinic. All necessary remediation efforts on these cooling towers have been completed.

Symptoms typically manifest—such as cough, fever, headaches, muscle aches, and shortness of breath—within two days to two weeks after exposure to the bacteria, according to the U.S. Centers for Disease Control and Prevention.

City health officials advise that anyone living or working in the area should seek medical attention if they begin to experience flu-like symptoms.