Nearly two weeks into the Legionnaires’ outbreak in Manhattan, officials said Tuesday the bacteria that causes the disease has been found at dozens of more buildings.

New York City Health Commissioner Dr. Alister F. Martin confirmed Legionella bacteria has been detected at 76 within the Upper East Side zip codes of 10128, 10028 and 10075, up from 31 as of Monday.

76 “is a significant number”  

The Department of Health said 57 buildings have already completed the required remediation, and the rest need to do so by Thursday.

“Seventy-six buildings, we know, is a significant number, but we knew that that list would be long,” Martin said. “There’s a high concentration of cooling towers in the Upper East Side and our initial screening tests cast a wide net. These results are also indicative of just how common Legionella is in our built environment.”

The health department says there are currently 60 confirmed cases, but just one additional one since Monday. More than half of all patients who were hospitalized have returned home and there have been no deaths.

NYC Council speaker recently took health department to task

The new information on the impacted buildings comes on the heels of City Council Speaker Julie Menin criticizing the handling of the outbreak by Mayor Zohran Mamdani’s administration.

On Monday night, the city hosted its second virtual town hall on the Upper East Side cluster. It focused on ongoing testing, health risks, and what the most vulnerable to an infection need to know.

During the meeting, Menin raised concerns and pushed for more guidance for the public. Later on social media, she demanded greater transparency and pressed the health department, calling on it to “proactively disinfect all cooling towers in the affected area, promptly disclose which buildings have tested positive for Legionella.”

During the meeting, the health department panel answered concerns raised about potential exposure.

“In the scenario of a community cluster, which we are in now, it is safe to use your shower, safe to use your air conditioner, safe to drink your water,” Martin said.