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Marshall County public health reports 74 Legionella cases, two deaths; no new cases in nearly two weeks
Summary
Marshall County Public Health reported 74 Legionella cases and two deaths tied to a North Central Marshalltown outbreak; investigators identified 12 business centers with cooling towers as likely sources and say disinfection work begun mid‑September appears to have halted new cases.
Marshall County Public Health Director Sydney Gruwell told the Board of Supervisors on Oct. 8 that the county has identified 74 Legionella cases and two deaths connected to a local outbreak. “As of this morning, we have identified 74 cases and 2 deaths related to the outbreak,” Gruwell said.
Gruwell said the last positive case came on Sept. 25, meaning the county has not recorded a new case in nearly two weeks. “Our last positive case was reported on September 25, which tomorrow will mark 2 weeks,” she said, and added that the absence of new positives is consistent with remediation efforts.
Investigators focused on cooling towers in northern Marshalltown and identified 12 business centers with towers…
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