The number of cases of Legionnaires’ disease, a severe form of pneumonia, has been increasing in Harlem, New York City since the end of July. As of Aug. 6, 73 people have been diagnosed with the illness, and three have died, according to the New York City Health Department.
Legionnaires’ disease, caused by the Legionella bacterium, is commonly found in freshwater sources. The bacteria can enter building water systems, leading to potential contamination. The outbreak in Harlem was linked to 11 cooling towers, which have since been remediated, according to the NYC Health Department.
People can contract Legionnaires’ disease by inhaling mist or swallowing water containing the bacteria. The illness does not spread from person to person. Symptoms range from mild flu-like symptoms to severe pneumonia.
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Treatment for Legionnaires’ disease involves antibiotics, and recovery varies depending on the severity of the case. Public health officials have advised residents in the affected zip codes to stay informed about the outbreak and follow updates from the CDC and NYC Health.
While the risk of contracting Legionnaires’ disease is low for most people, certain groups such as older adults and individuals with underlying health conditions are at increased risk. Prevention measures include ensuring the safety and maintenance of HVAC systems in buildings.
