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Agency Testimony

Commissioner Martin on ongoing genetic analysis to identify source

New York City Council · Sep 2, 2026 · starts 1:02:37 · 1 min 11 sec

Martin explains whole genome sequencing is underway comparing patient and cooling tower bacteria DNA, expected to complete this fall. He notes not every positive tower caused infections and genetic matches would pinpoint the source.

Commissioner Martin

While my testimony thus far has outlined our response in the past tense, there is still one outstanding step in our accountability process.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Commissioner Martin

On July 31st, we were confident any bacterial source had been eliminated.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Commissioner Martin

Two weeks, the incubation period for Legionnaire's disease had passed since anyone who lives, works, or had visited in the area began feeling symptoms.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Commissioner Martin

But

Commissioner Martin

Our work is not yet finished.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Commissioner Martin

We continue with a genetic analysis aimed at pinpointing a source of bacteria that actually made people sick in this cluster.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Commissioner Martin

We know that not every cooling tower that harbored Legionella bacteria ultimately caused an infection.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Commissioner Martin

To trace the bacteria that may have caused this illness, our public health laboratory experts are comparing the DNA in Legionella cultured from patient samples collected by doctors to the DNA in Legionella cultured from cooling tower water samples

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Commissioner Martin

that were collected in the investigation zone.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Commissioner Martin

We expect that analysis to be complete this fall.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Commissioner Martin

If there are genetic matches, we may have more information on what exactly happened in the Upper East Side to cause this summer's cluster.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.

Member of the Public - Valerie Mason

We were overwhelmed with inquiries about whether people should be able to go to the Upper East Side.