A Legionnaires' disease outbreak in Harlem is blamed for at least three deaths, and NYC officials are warning to watch out for the symptoms.

Mohamed Hamdy Yassin, M.D., an infectious disease specialist with University of Pittsburgh Medical Center who sees about 15 to 20 cases of Legionnaires’ disease each year, says

Fifty-eight people have been infected—and two have died—in a New York City outbreak of Legionnaires’ disease—a severe type of pneumonia caused by a bacterium commonly associated with air-conditioning