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.

Here’s what to know about Legionnaires’ disease, how it spreads, and the East Harlem cooling tower outbreak under investigation.

Harlem City Councilmember Yusef Salaam, Sen. Cordell Cleare, Assemblyman Jordan Wright and NYC Health's Dr. Michelle Morse gave an update on the disease cluster.