The most recent surge of cases in Manitoba’s measles outbreak has come to an end. However, health experts caution that the province is still far from achieving herd immunity against the virus, indicating that new cases are likely to increase in the future.
Dr. Davinder Singh, the medical officer of health for Manitoba’s immunization program, emphasized the importance of improved vaccine uptake to prevent future outbreaks. In July, only two confirmed cases of measles were reported, marking the lowest number since March 2025.
During a 3½ week period in July, Manitoba Public Health did not report any new infections, representing the longest interval without a recorded case since the winter of 2024-25. Dr. Singh highlighted the significance of this decline, indicating reduced transmission compared to the peak of 177 confirmed cases in February.
Since then, the number of reported infections has steadily decreased, with 49 cases in May and eight cases in June. Despite expectations of a potential rise in cases during the fall, the numbers are anticipated to remain significantly lower than previous levels.
Brandon Mayor Jeff Fawcett noted the considerable decrease in measles cases, stating that the issue was no longer a prominent concern as the city prepared to host a large event. This shift marks a stark contrast from the heightened worries surrounding previous outbreaks at public gatherings.
Although the current wave of measles infections in Manitoba appears to be subsiding, medical experts warn that the virus may resurge in the future, particularly during the colder months. Dr. Philippe Lagacé-Wiens emphasized the seasonal nature of measles transmission and the potential for renewed outbreaks if herd immunity levels are not met.
To achieve herd immunity and effectively prevent measles outbreaks, at least 95% of the population in Manitoba needs to be immune to the virus. However, current immunization rates fall short of this target, leaving pockets of the population vulnerable to infection.
Efforts to boost vaccination rates and build trust in immunization are ongoing in Manitoba. Health officials have extended vaccine eligibility to infants as young as six months old in specific regions and have collaborated with schools and healthcare providers to promote accurate information about immunization. These initiatives aim to prevent future outbreaks and safeguard public health in the province.
