A new Legionanire’s disease outbreak has struck the Upper East Side, resulting in 18 cases so far. Health Department Commissioner Alistair Martin spread the news locally on July 4 (above).
A new Legionanire’s disease outbreak has struck the Upper East Side, resulting in 18 cases so far. Health Department Commissioner Alistair Martin spread the news locally on July 4 (above). ( Photo: @nycHealthy, X.com )

The outbreak has resulted in 18 cases as of Monday, July 6, with health officials asking members of the public who have visited eastern Central Park—between East 76th Street and East 97th Street—to monitor for symptoms.

18 New Cases as Legionnaire’s Disease Outbreak Hits UES
06 Jul 2026 | 05:05
News

Legionnaire’s disease has broken out on the Upper East Side yet again, with 18 cases reported from one cluster as of Monday, July 6. Affected ZIP codes include 10028, 10128, and 10075. No deaths have been reported.

The NYC Health Department has been investigating the outbreak for days, Mayor Zohran Mamdani...

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