First death reported in Upper East Side Legionnaires' disease outbreak as cases rise to 67

New York City health officials announced Friday that the first person has died in connection with a growing Legionnaires' disease outbreak on Manhattan's Upper East Side as the number of confirmed infections continued to rise.

"I am saddened to report that one person has died in connection with the Legionnaires’ disease community cluster on the Upper East Side," New York City Health Commissioner Dr. Alister F. Martin said in a statement.

"My deepest condolences are with their loved ones, and out of respect to their personal privacy, we will not be releasing any additional information on the individual."

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The death comes as the outbreak has sickened 67 people as of Thursday night, up from 63 cases reported a day earlier. Twelve people remain hospitalized, according to city health officials.

Investigators are tracing the outbreak to Legionella pneumophila bacteria found in 76 cooling towers across the Upper East Side and one on the Upper West Side. Buildings that tested positive, including the Solomon R. Guggenheim Museum, have been ordered to clean and disinfect their cooling towers.

Legionnaires' disease is a severe form of pneumonia caused by Legionella bacteria, which naturally occurs in water but can multiply in building water systems such as cooling towers. The illness can be treated with antibiotics if diagnosed early.

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Cooling towers, commonly found on rooftops, help regulate large building cooling systems and can release mist containing the bacteria. Health officials have emphasized that the outbreak is not linked to New York City's drinking water or indoor air conditioning.

Health officials urged anyone who lives, works or has visited the affected area since late June and develops flu-like symptoms to contact a health care provider immediately.

Symptoms typically appear two to 14 days after exposure and include fever, cough, shortness of breath, muscle aches and headaches. The disease spreads through contaminated water droplets and is not spread from person to person.

Older adults, smokers and people with chronic lung disease or weakened immune systems face the highest risk of severe illness. According to the Centers for Disease Control and Prevention, about 1 in 10 people diagnosed with Legionnaires' disease die from complications.

City health officials said early diagnosis and prompt treatment with antibiotics can significantly improve outcomes for patients who become infected.