A deadly Legionnaires' disease outbreak in New York City has set health and community leaders on a campaign to educate the public on ways to prevent the bacteria from growing and spreading.

New York City officials gathered Thursday to address the growing concern regarding the cluster of Legionnaires’ disease cases in Central Harlem. As of Thursday afternoon, three people had died of the disease.

As of Thursday evening, there had been three deaths, which was the same number as the day before. However, the city’s Health Department said there were now 81 confirmed cases, up from 73 the day before.