The number of Legionnaires’ disease cases in north central Marshalltown has risen to 34, according to the latest update from the Iowa Department of Health and Human Services on Tuesday.

UPDATE - September 11, 2025:

State health officials confirmed that there have been 38 cases since August. The number of deaths remains at one.

PREVIOUS STORY - September 9, 2025

Legionnaires' disease cases in Marshalltown rise to 34

MARSHALLTOWN, Iowa (KWWL) — The number of Legionnaires’ disease cases in north central Marshalltown has risen to 34, according to the latest update from the Iowa Department of Health and Human Services on Tuesday.

The number of deaths from the disease remains at one since the outbreak investigation began.

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