Experts Urge Unvaccinated to Avoid Large Gatherings Amid Measles Surge

As measles cases rise in Manitoba, health experts are advising unvaccinated individuals to avoid large public gatherings. This caution follows reports that attendees at the recent AG Days indoor farm show in Brandon may have been exposed to the virus. The event, which attracted approximately 35,000 visitors from January 20 to 22, raised concerns among public health officials about potential transmission.

Public Health Warning and Risks

Participants in the AG Days event, as well as those who frequented hotels, restaurants, and shops in Brandon during the festival, could have been exposed to measles, according to Manitoba public health. Dr. Philippe Lagacé-Wiens, a medical microbiologist at St. Boniface Hospital, expressed grave concern about the outbreak. “In a closed space, 90 percent of people who are susceptible will catch measles if there’s an infectious individual present,” he stated.

Symptoms of measles can take weeks to appear, meaning a person could unknowingly spread the virus. “This chain of transmission is alarming,” Dr. Lagacé-Wiens warned, especially as Manitoba reported its highest monthly count of confirmed measles cases since the outbreak began in February 2025.

The high transmission rate of measles means that individuals not vaccinated are at a significant risk, particularly in large gatherings. Dr. Lagacé-Wiens emphasized the importance of staying away from crowded events if unvaccinated or experiencing symptoms resembling measles.

Vaccination and Community Response

Angela Rasmussen, a virologist at the University of Saskatchewan, noted that with declining vaccination rates, herd immunity is no longer a viable option for protecting unvaccinated individuals. “The only way to prevent infection risks is to minimize exposure,” she said. This recommendation extends especially to newborns and immunocompromised children who are not yet eligible for vaccination.

As the outbreak evolves, Manitoba’s response has not yet required restrictions on gatherings. Dr. Lagacé-Wiens indicated that should hospitalizations rise significantly, particularly among infants, public health officials may consider stricter measures. “If we start to see infants in intensive care units, we might begin to see public health pushing for reduced events,” he mentioned.

While the province has not reported a spike in local cases linked to AG Days, Brandon Mayor Jeff Fawcett stated that the city is closely monitoring the situation, reminding residents of available vaccination options and the importance of symptom vigilance. He credited high immunization rates, partly due to the community’s experience during a major measles outbreak in the 1980s, for the current level of public health awareness.

Rasmussen called for a more aggressive strategy to combat misinformation surrounding vaccinations, which can hinder public health efforts. “We need to effectively reach those who are undecided about vaccines and communicate directly with them,” she stated.

The ongoing situation highlights the critical need for individuals to adhere to public health guidance, particularly in light of the highly contagious nature of measles. Dr. Lagacé-Wiens urged those who are unvaccinated to avoid large public gatherings to help prevent further spread of the virus.

In conclusion, as the measles outbreak continues in Manitoba, the emphasis remains on vaccination and individual responsibility to mitigate risks associated with large gatherings. Public health officials continue to monitor the situation closely, urging community members to stay informed and vigilant.