A Legionnaires' disease outbreak in New York City has infected 67 people and caused three deaths, health officials say.
The cases have been reported in Central Harlem. Officials believe the source of the outbreak is cooling towers on nearby buildings, according to the New York City Department of Health and Mental Hygiene.
Cooling towers are large rooftop devices that release mist into the air to help cool buildings. But if the water inside the tower becomes too warm or isn't disinfected properly, bacteria called Legionella can grow. People can get sick when they inhale this contaminated mist.
The disease does not spread from person to person.
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