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Disclaimer: Early release articles are not considered as final versions. Any changes will be reflected in the online version in the month the article is officially released.

Volume 32, Number 10—October 2026

Research

Wastewater Surveillance to Track Resurgent Measles Outbreak, Ontario, Canada, 2025

Ryland Corchis-ScottComments to Author , Élisabeth Mercier, Edgard M. Mejia, Qiudi Geng, Ethan Harrop, Ana Podadera, Jackie Fong, Natalie Lewoc, Kenneth K.S. Ng, Nataliya Santiago, Natalie Knox, Lawrence Goodridge, Chand S. Mangat, Chrystal Landgraff, Karen B. Riddell, Mehdi Aloosh, Robert Delatolla, and R. Michael McKay
Author affiliation: University of Windsor, Windsor, Ontario, Canada (R. Corchis-Scott, Q. Geng, E. Harrop, A. Podadera, J. Fong, K.K.S. Ng, R.M. McKay); University of Ottawa, Ottawa, Ontario, Canada (É. Mercier, R. Delatolla); National Microbiology Laboratory, Winnipeg, Manitoba, Canada (E.M. Mejia, N. Santiago, N. Knox, C.S. Mangat, C. Landgraff); Windsor Essex County Health Unit, Windsor (N. Lewoc, M. Aloosh); University of Guelph, Guelph, Ontario, Canada (L. Goodridge); Windsor Regional Hospital, Windsor (K.B. Riddell); McMaster University, Hamilton, Ontario, Canada (M. Aloosh)

Main Article

Figure 4

Wastewater surveillance for vaccine genotype measles and vaccination data for measles virus in Leamington, Ontario, 2025. Black line indicates weekly vaccine administrations and trend; dark bars indicate wastewater detections of MeV hemagglutinin gene single-nucleotide polymorphism unique to the vaccine genotype. White bars indicate weeks in which vaccine genotype measles virus was not detected.

Figure 4. Wastewater surveillance for vaccine genotype measles and vaccination data for measles virus in Leamington, Ontario, 2025. Black line indicates weekly vaccine administrations and trend; dark bars indicate wastewater detections of MeV hemagglutinin gene single-nucleotide polymorphism unique to the vaccine genotype. White bars indicate weeks in which vaccine genotype measles virus was not detected.

Main Article

Page created: July 01, 2026
Page updated: September 22, 2026
Page reviewed: September 22, 2026
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