Measles Outbreak in British Columbia's Interior: Health Alert Issued

British Columbia's Interior Health (IH) department has confirmed new cases of measles, marking an alarming rise in infections within the region. As of June 27, 2025, there are three active cases reported, contributing to a total of five cases documented this year. The affected areas include Kamloops, Kelowna, Salmon Arm, and the Nelson region.

According to Dr. Jennifer Smith, Medical Health Officer at Interior Health, the recent outbreak has prompted immediate contact tracing efforts. "We are reaching out to individuals who may have come into contact with confirmed cases, as part of our standard public health protocol," Dr. Smith stated during a press briefing. IH is advising anyone who may have been exposed to monitor for symptoms, which typically manifest within 14 to 21 days after exposure. Initial symptoms include fever, cough, runny nose, and conjunctivitis, followed by a characteristic rash that usually begins on the face.

The health authority has identified specific exposure locations, urging individuals who attended a faith-based gathering at the Enderby Splatsin Centre on June 7 and 8 to be particularly vigilant. Additionally, recent flights linked to the outbreak include WestJet flights from Fort St. John to Vancouver and from Vancouver to Kelowna on June 23, as well as a flight from Kamloops to Calgary on June 25.

Currently, the risk of infection is considerably low for individuals who have received two doses of the measles vaccine, as stated by the BC Centre for Disease Control (BCCDC). However, those who are unvaccinated or have only received one dose are considered at risk. Vaccination remains the most effective form of prevention against measles, a highly contagious viral disease.

Dr. Laura Chen, a pediatric infectious disease specialist at the University of British Columbia, emphasized the importance of vaccination. "The best defense against measles is immunization. We encourage all eligible individuals to ensure they are fully vaccinated, especially in light of this outbreak,” Dr. Chen said.

The increase in measles cases in British Columbia mirrors a broader trend seen across Canada. According to a report published in the Canadian Medical Association Journal in April 2025, measles outbreaks have surged globally, attributed largely to declining vaccination rates and misinformation surrounding vaccine safety. The World Health Organization recently underscored this concern, stating that measles remains a leading cause of vaccine-preventable deaths worldwide.

In response to the outbreak, Interior Health has ramped up efforts to make vaccines readily available, with community health centers and pharmacies offering immunizations. Individuals born in 1970 or later who have not received two doses are advised to get a booster, particularly if they have been exposed to confirmed cases. Special considerations are in place for vulnerable populations, including pregnant individuals and infants under six months, who may require alternative protective measures.

As the situation evolves, health officials continue to monitor the outbreak closely. The BCCDC maintains an updated list of exposure sites, including flights and public venues, which can be accessed online for the public's convenience. Those who suspect they have been exposed and are not fully vaccinated are encouraged to contact health services immediately for assessment and advice.

This outbreak serves as a critical reminder of the importance of vaccination and public health vigilance, particularly in the context of rising global measles cases. As the health community works to mitigate this outbreak, collaboration and public compliance with health directives will be essential in safeguarding community health in British Columbia.