Overview

• The outbreak ultimately infected 2,375 people across 26 public health units, with most cases in infants, children and adolescents and over 96% in the unvaccinated.
• Provincial spread was traced to an Oct. 18 exposure linked to a New Brunswick case, and New Brunswick ended its own outbreak in January.
• A newborn in southwestern Ontario died after in‑utero exposure tied to the outbreak, and Alberta reported a separate infant death during its ongoing surge.
• Public Health Ontario cautioned that measles continues to circulate in Canada and urged residents to ensure measles, mumps and rubella vaccinations are up to date.
• Ontario has recorded 43 additional measles cases this year not linked to the outbreak, Alberta has reported 1,925 cases to date, and Canada could lose its measles elimination status on Oct. 27.