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Volume 32, Number 7—July 2026

Synopsis

Outbreak of Legionnaires’ Disease Linked to Newly Installed Residential Water Heaters, the Netherlands, 2022–2023

Daphne F.M. ReukersComments to Author , Sjoerd M. Euser, Alvin A. Bartels, Martijn G. Keet, Marijke Boot, Wilhelmina L.M. Ruijs, and Petra S. Brandsema
Author affiliation: Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands (D.F.M. Reukers, A.A. Bartels, M.G. Keet, M. Boot, W.L.M. Ruijs, P.S. Brandsema); Regional Public Health Laboratory Kennemerland, Haarlem, the Netherlands (S.M. Euser)

Main Article

Figure 1

Timeline of cases in an outbreak of Legionnaires’ disease linked to newly installed residential water heaters, the Netherlands, 2022–2023. Timelines show calendar weeks for case-patient illness onset in 2022 (A) and 2023 (B). Numbered cases are from 2 clusters (cluster 1 and cluster 2) in separate apartment buildings in the Netherlands. Red date is week public warning was issued.

Figure 1. Timeline of cases in an outbreak of Legionnaires’ disease linked to newly installed residential water heaters, the Netherlands, 2022–2023. Timelines show calendar weeks for case-patient illness onset in 2022 (A) and 2023 (B). Numbered cases are from 2 clusters (cluster 1 and cluster 2) in separate apartment buildings in the Netherlands. Red date is week public warning was issued.

Main Article

Page created: May 13, 2026
Page updated: June 25, 2026
Page reviewed: June 25, 2026
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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