NYC Legionnaires’ Outbreak In Harlem: Here's What To Know

NEW YORK CITY — An ongoing Legionnaires’ disease outbreak in New York City has killed two people and left more than 50 sick, city health officials announced.

A total of 58 cases of the potentially deadly, pneumonia-like illness have now been confirmed in Central Harlem in recent days, following the initial identification of the cluster in late July, according to previous reports by Patch.

Here's what you need to know.

Outbreak Concentrated In 5 ZIP Codes Within Harlem

Health officials have said the outbreak is concentrated in ZIP codes 10027, 10030, 10035, 10037, and 10039) and bordering communities.

Cooling towers in the area have been tested for Legionella bacteria, the cause of the disease.

As of last Wednesday, 22 cases had been reported, a number that has more than doubled since, the NYC Health Department said.

"Anyone in these zip codes with flu-like symptoms should contact a health care provider as soon as possible," Acting Health Commissioner Dr. Michelle Morse said in a statement. "Legionnaires’ disease can be effectively treated if diagnosed early, but New Yorkers at higher risk, like adults aged 50 and older and those who smoke or have chronic lung conditions, should be especially mindful of their symptoms and seek care as soon as symptoms begin."

What Is Legionnaires’ Disease?

Legionnaires’ disease is a form of pneumonia caused by Legionella bacteria, which thrive in warm water. Infection typically occurs by inhaling water vapor containing the bacteria.

The Health Department has completed remediation of 11 cooling towers that tested positive for Legionella pneumophila. Officials urge anyone living or working in the area with symptoms like cough, fever, chills, muscle aches, or difficulty breathing to seek medical attention immediately.

While potentially deadly if untreated, Legionnaires’ disease is not contagious and can be effectively cured with antibiotics, according to the Health Department.