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Provisional — subject to revision

Berkshire Medical Center, Pittsfield, MA

Legionnaires’ disease outbreak · May–Aug 2025 · Massachusetts

7
Cases
2
Deaths
Closed
Status

Suspected source

Legionella found in cooling towers and the hospital water system (Hospital water system)

What happened

Seven patients tested positive for Legionella at Berkshire Medical Center in Pittsfield, MA between May and August 2025, and two died; Legionella was found in cooling towers and the water system.

Sources & coverage

In-depth reporting on this and other Legionnaires’ disease outbreaks is available from Pritzker Hageman’s Legionnaires’ disease resource center.

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Primary source: Legionella found in cooling towers and the hospital water system. Figures are provisional and may be revised or withdrawn by the reporting authority. This page is for information only and is not medical or legal advice.