Quebec declares end to measles outbreak after no cases reported for 32 days

A dose of the measles, mumps, and rubella (MMR) vaccination awaits the next patient during a vaccine clinic at Southwestern Public Health in St. Thomas, Ont., Tuesday, March 4, 2025. (Geoff Robins / The Canadian Press)

Quebec’s Health Ministry has declared an end to the measles outbreak in the province after no new cases were reported over the weekend.

According to ministry spokesperson Marie-Christine Patry, an outbreak can be considered over if 32 days pass without a new reported infection.

Quebec’s outbreak began in December 2024, and involved a contagious traveller who had visited the province before they were diagnosed.

Most of the province’s cases — 32 out of 40 — were reported in the Laurentians region north of Montreal.

The federal government says there have been 880 measles cases reported in five provinces so far in 2025, with the vast majority — 804 — in Ontario.

Patry says there hasn’t been a new case of measles reported in Quebec since March 18.

This report by The Canadian Press was first published April 22, 2025.