Key Takeaway:
- Five people have died, and 84 people have been infected in the Legionnaires outbreak NYC as the investigation continues.
- Council Speaker Julie Menin blames Mayor Zohran Mamdani’s administration for a delayed response, while city officials defend their targeted testing strategy.
- Officials say the outbreak is likely over after disinfecting contaminated cooling towers, but the exact source has not yet been identified.
A fifth person has died in New York City’s Legionnaires’ disease outbreak, prompting City Council Speaker Julie Menin to accuse Mayor Zohran Mamdani’s administration of delayed action as officials defend their response and say the Legionnaires outbreak NYC is likely over.
Menin criticizes city’s response as death toll climbs
New York City Council Speaker Julie Menin is blaming Mayor Zohran Mamdani’s administration for what she describes as a slow and ineffective response to the Legionnaires’ disease outbreak on Manhattan’s Upper East Side.
In an opinion piece published by the New York Post, Menin said the city’s response reflected “a failure of leadership, a lack of transparency and a lack of urgency.” She argued that the city’s Health Department should have proactively disinfected cooling towers across the affected area instead of waiting for laboratory results, a step among the core infectious disease prevention strategies public health experts recommend.
“I repeatedly called on the Health Department to proactively disinfect cooling towers throughout the affected area,” Menin wrote. “Instead, the department chose to wait — and the crisis spread.”
The Legionnaires outbreak NYC has sickened 84 people and resulted in five deaths. According to city health officials, seven patients remain hospitalized, 59 have been treated and released, and 13 were not hospitalized.
Mayor, health officials defend targeted strategy
Mayor Mamdani defended the city’s response Wednesday, calling it the most aggressive effort New York City has undertaken to eliminate Legionella bacteria.
“This is the most aggressive remediation and enforcement strategy that our city has ever taken to eliminate the source of Legionella bacteria,” Mamdani said.
Health inspectors collected samples from cooling towers linked to the investigation before ordering disinfection of those that tested positive. Officials said the testing process required time because hundreds of samples needed laboratory analysis before remediation could begin.
New York City Health Commissioner Dr. Alister Martin said a citywide disinfection campaign at the start of the Legionnaires outbreak NYC would have complicated the investigation.
“Every time we do this biocide treatment, it actually does degrade the cooling towers,” Martin said. “Had we done blanket disinfectant from the beginning, we wouldn’t be able to actually get the samples. And we need the samples to know what caused this.”
Martin said preserving evidence was necessary to identify the source of the outbreak and prevent future cases.
Investigation continues despite signs outbreak is ending
The city’s Department of Health reported Wednesday that inspectors tested 183 cooling towers at 160 buildings. Initial PCR testing detected Legionella bacteria in 77 cooling towers at 75 buildings, while culture testing confirmed live bacteria in 51 cooling towers at 50 buildings. Officials said all confirmed contaminated towers have since been cleaned and disinfected.
Nineteen cooling towers have tested culture negative, while additional laboratory results remain pending.
Mamdani said recent data suggests the Legionnaires outbreak NYC is coming under control.
“We believe that we have now eliminated the source of the initial cluster,” he said. “There has been no one with new symptoms reported in more than 10 days and no new diagnoses in a week.”
Health officials have not identified the exact source of the outbreak, and the investigation remains ongoing.
City data also shows persistent compliance issues with cooling towers. Since 2017, about 70% of city inspections of cooling towers have resulted in violations, underscoring long-standing concerns about maintenance and public health oversight, a pattern consistent with CDC research linking poorly maintained water systems to Legionella growth.
