biostudies-literatureUnknown28(11)Atikesse LIn August 2021, a legionellosis outbreak involving 7 persons occurred within a 500-meter radius in the Montérégie region of Québec, Canada. Near real-time modeling of wind direction along with epidemiologic and environmental investigations identified the possible source. Modeling wind direction could help identify likely Legionella pneumophila sources during legionellosis outbreaks.Emerging infectious diseases2357-2360https://www.ebi.ac.uk/biostudies/studies/S-EPMC9622261biostudies-literatureEnvironmental Investigation during Legionellosis Outbreak, Monteregie, Quebec, Canada, 2021.PMC9622261Atikesse LMilord FKadaoui NLavallee VLevac ESt-Amour MfalseEnvironmental Investigation during Legionellosis Outbreak, Monteregie, Quebec, Canada, 2021.In August 2021, a legionellosis outbreak involving 7 persons occurred within a 500-meter radius in the Montérégie region of Québec, Canada. Near real-time modeling of wind direction along with epidemiologic and environmental investigations identified the possible source. Modeling wind direction could help identify likely Legionella pneumophila sources during legionellosis outbreaks.2022-01-01T00:00:00Z2022 Nov2025-04-05T11:57:24.827Z2025-04-05T11:57:24.827ZS-EPMC96222613628624810.3201/eid2811.220151