A cooling tower at Yankee Stadium has tested positive for Legionella bacteria, New York City officials said, according to The New York Times. The finding places the Bronx ballpark within a cluster of Legionnaires' disease cases that city health officials are investigating.
PIX11 reports that Yankee Stadium has been listed among locations tied to the Bronx cluster. ABC News reports that the cluster involves one death and five cases, citing New York City health officials.
Legionella bacteria can cause Legionnaires' disease, a form of pneumonia. Cooling towers are among the water systems that can harbor and spread the bacteria. The material above does not specify the source of the infection for any of the reported cases, and no link between the stadium tower and the illnesses has been confirmed in the available reporting.
The New York Times and Gothamist both reported the positive test result at the stadium. The Times published its report on Monday, September 14, 2026.
The reports do not include details on when the tower was sampled, what concentration of bacteria was found, or whether remediation has begun. They also do not state whether the stadium's operations or events have been affected.
What to watch next: whether city health officials identify a source for the cluster and whether additional cooling towers in the area test positive.
