Manitoba has seen a decrease in the most recent wave of measles infections, but health experts caution that the province is still far from achieving herd immunity against the virus. Dr. Davinder Singh, a medical officer of health with Manitoba’s immunization program, emphasized the need for improved vaccine uptake to prevent another surge in cases.
In July, only two cases of measles were confirmed, marking the lowest number recorded since March 2025. For a period of 3½ weeks that month, Manitoba Public Health did not report any new infections, the longest stretch without a recorded case since the winter of 2024-25.
The outbreak in the province peaked at 177 confirmed cases in February but has since steadily declined, with 49 cases reported in May and eight in June. Despite the possibility of an increase in cases during the fall, Singh believes any resurgence will be significantly lower than previous levels.
Brandon Mayor Jeff Fawcett noted the considerable drop in measles cases since the peak of the outbreak, mentioning that the disease was not a concern during a recent horse show attended by hundreds of people. This contrasts with the heightened worries surrounding events like the Royal Manitoba Winter Fair earlier this year.
While some individuals who were initially susceptible to measles have now contracted the virus and developed resistance, Dr. Philippe Lagacé-Wiens, a medical microbiologist, cautioned that the virus may reemerge, especially during the colder months when transmission rates typically increase.
Maintaining herd immunity is crucial to halting the spread of measles, with experts suggesting that at least 95% of the population in Manitoba needs to be immune to achieve this goal. However, current vaccination rates fall short of this target, leaving pockets of the population vulnerable to infection.
The recent decline in measles cases is attributed to both increased immunity and seasonal factors, but health officials stress the importance of ongoing efforts to boost vaccination rates and prevent future outbreaks. Despite the drop in cases, vigilance and continued public health measures are necessary to ensure long-term protection against the highly contagious virus.