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1 revisions for "North Carolina's Legionnaires' Disease Cases Surged 54% Last Year. Here's What's Behind the Spike."

North Carolina reported 310 Legionnaires' disease cases in 2025, a 54% increase over 2024 and well above the state's five-year average, prompting the NCDHHS to issue prevention guidance on April 17, 2026. The surge mirrors a national trend that has seen reported U.S. cases increase more than sixfold since 2000, driven by aging water infrastructure, an older population, and persistent underdiagnosis that may mask the true burden by a factor of eight to ten.