Preliminary testing detected Legionella DNA in a cooling tower at Yankee Stadium as New York City investigates a Legionnaires’ disease cluster in the South Bronx. The city had confirmed 11 cases by Tuesday night, including one death. Three people remained hospitalized. The New York City Health Department identified 10 cooling towers with positive preliminary PCR results across ZIP codes 10451 and 10456, which cover parts of Melrose and Morrisania.