New York lifts Legionnaires risk on the Upper East Side as outbreak that killed seven is contained

New York City has declared its deadly Legionnaires disease outbreak on Manhattan's Upper East Side over after seeing no new infections for more than two weeks, the disease's 14-day incubation period. The Health Commissioner earlier said the community cluster's source had been eliminated and there was no longer an elevated risk in three zip codes, though officials now say the precise source of the infections has not been identified. All told, more than 92 people were infected, seven died, five remain hospitalized, 67 were treated and released, and 13 were not sick enough to be hospitalized. As inspectors searched for the source, 60% of the health department's cooling tower inspections turned up at least one violation. The worst offender, officials say, was 300 East 83rd Street, which had a cooling tower that was not even registered. The two most concerning locations have been cited and fined roughly $10,000 each for failing to comply.

After weeks of anxiety on Manhattan's Upper East Side, New York City's health authorities are offering a measure of relief. The city's Health Commissioner has shared encouraging news about the deadly Legionnaires disease outbreak there, saying the worst of the threat may now be behind the city.

The most concrete sign of that shift is a change in the official risk assessment. The city says there is no longer an elevated risk in three zip codes on the Upper East Side that had been at the center of the cluster.

According to the city, the danger has been traced back to its origin and shut off. Health Commissioner Dr. Alistair Martin says the source of the community cluster has been eliminated.

That conclusion, officials say, rests on the calendar as much as on the cleanup. "We can confidently close this phase of our response because the incubation period, meaning the stretch of time during which new illnesses can arise, has passed," Dr. Martin said.

The timeline he referred to is specific to the disease. Legionnaires disease has a 14-day incubation period, and with no new infections in more than two weeks, the outbreak has now been declared over.

The full scale of the outbreak has also come into focus. All told, more than 92 people were infected: seven died, five remain in the hospital, 67 have been treated and released, and 13 were not sick enough to be hospitalized.

The search for what caused it exposed widespread lapses. As inspectors looked for the source, 60% of the health department's cooling tower inspections turned up at least one violation, some of them more than one.

One address stood out. The health department says the worst offender was 300 East 83rd Street, which had a cooling tower that was not even registered.

That scrutiny has carried consequences. The two most concerning locations have been cited and fined roughly $10,000 each for their failure to comply, which officials say risked the safety of New Yorkers.

For all the inspections and violations, one question is still unanswered. Despite extensive testing, the precise source of the infections has not been identified, even as the emergency phase of the response comes to a close.

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