Three people have died and more than 60 others are sickened in a growing Legionnaires' disease cluster in New York City, according to officials.

The cluster, which began July 25, has led to 67 Legionnaires' disease diagnoses in Central Harlem as of Aug. 5, according to the NYC Department of Health's latest update .

The source of the cluster is believed to be a cooling tower in the area, according to the agency.

Legionnaires' disease is a severe pneumonia caused by a type of bacteria called Legionella, which grows in warm water, according to the Centers for Disease Control and Prevention .

Where is the NYC Legionnaires' cluster?

NYC Health said the Legionnaires' disease cluster is affecting the following Central Harlem zip codes:

10027

10030

10035

10037

10039

The agenc

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