Legionnaires’ Disease outbreak widens on Manhattan’s Upper East Side, Guggenheim among sites affected

July 12, 2026 - 01:57

A growing outbreak of Legionnaires' disease on Manhattan's Upper East Side has now reached the Solomon R. Guggenheim Museum, where one of the building's cooling towers tested positive for Legionella bacteria. Health officials confirmed that the Guggenheim's tower is among 31 sites in the neighborhood where the bacteria was detected.

Legionella, the pathogen responsible for Legionnaires' disease, can multiply in water systems like cooling towers, hot tubs, and large plumbing networks. When contaminated water droplets become airborne, people can inhale them and develop a severe form of pneumonia. Symptoms include cough, fever, chills, and muscle aches, often appearing two to 10 days after exposure.

The New York City Department of Health has been investigating the cluster of cases since late last month. As of now, the outbreak has sickened at least a dozen people, with several requiring hospitalization. No deaths have been reported. Officials are urging building owners in the affected area to disinfect their water systems and cooling towers immediately.

The Upper East Side, a densely populated residential and cultural district, is home to many older buildings with complex water infrastructure. The Guggenheim, a landmark Frank Lloyd Wright design, has cooperated with health authorities and is treating its system. The museum remains open to the public, though some areas near the cooling tower have been restricted as a precaution.

Residents are advised to contact a doctor if they develop flu-like symptoms, especially those with weakened immune systems or chronic lung conditions. The Health Department continues to monitor the situation and update the public as more test results come in.