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 15, 2025:

MARSHALLTOWN, Iowa — The latest numbers from Iowa health officials now show 52 cases of Legionnaires' disease in Marshall county. That's up 12 since Friday.

Health officials say the cluster is centered around the north-central part of Marshalltown.

UPDATE - September 11, 2025:

MARSHALLTOWN, Iowa — The Iowa Department of Health and Human Services, along with the Marshall County Public Health Department, reported an increase in Legionnaires' disease cases in the county.

State health officials confirmed that there have now been 38 cases since August. The number of deaths rema

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