New York City Department of Health inspectors are fanning out across Central Harlem to inspect cooling towers amid a deadly outbreak of Legionnaires' disease. So far there have been 73 cases identified since July 25.

A t least three people have died in a Legionnaires’ disease outbreak in Harlem, authorities said in the most recent update, in the latest summer flare-up of the disease that officials say primarily impacts older people and is potentially linked to poorly maintained cooling towers.

Three people have died and at least 67 people have been diagnosed with Legionnaires’ disease in a cluster that broke out in New York City last week.