A Legionnaires' disease outbreak in New York's Central Harlem neighborhood has now sickened 90 people and caused three deaths, health officials said Tuesday.

A Department of Health spokesperson told CNN that the proposed rules “were in development well before the Legionnaires’ cluster in Central Harlem.” Under current city law, building owners must register and maintain their cooling towers,

A Legionnaires' disease outbreak in Central Harlem in New York City has now reached 90 confirmed cases, including three deaths. The outbreak, first announced on July 25, has prompted a public health response and renewed focus on preventing future incidents.