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

Three people have been killed this week by an outbreak of Legionnaires' disease in central Harlem, Manhattan, according to the New York City Health Department. At least 64 other people have been diagnosed since July 25. The rapidly expanding cluster has prompted urgent public health interventions with residents and workers in five Harlem ZIP codes.

The cases are most likely linked to a cooling tower in central Harlem, health officials said. At least 22 people have fallen ill, including one person who has died, from Legionnaires’ disease in New York City over the last two weeks, according to the city’s health department.

Nearly 60 people have become sick and two have died in an outbreak of Legionnaires' disease in New York City. Health officials there issued an alert on July 30 warning residents of Central Harlem who have flu-like symptoms to see a health care provider immediately.

Four people have died as a result of a Legionnaires’ disease outbreak in Harlem that has sickened nearly 100 people, and officials revealed the cooling towers that tested positive for the bacteria that causes the illness — some of which are at properties owned by New York City,