Confirmed cases of influenza in northeastern Ontario are significantly higher compared to the same period last year. As of December 20, the North Bay and Parry Sound regions reported 267 lab-confirmed cases, a substantial increase from only three cases during the corresponding period in the previous year. Similarly, the Sudbury and Manitoulin districts registered 128 lab-confirmed cases by December 22.
Katie Junkin, a health protection specialist at Public Health Sudbury and Districts, noted that this flu season is showing higher activity earlier than in previous years. She mentioned that there have been 12 flu-related hospitalizations in Sudbury within the last week, emphasizing the severity of the flu, particularly for vulnerable populations like young children and the elderly.
Dr. Carol Zimbalatti, the medical officer of health for the North Bay Parry Sound District Health Unit, highlighted concerns about the H3N3 influenza A subtype currently prevalent across the country. She explained that rapid mutations in the subtype, particularly in the southern hemisphere, have led to potential immune escape, reducing the effectiveness of past immunity.
Despite the vaccine being a “sub-optimal” match for H3N2 this year, Zimbalatti emphasized the importance of vaccination in preventing severe symptoms and hospitalization. In response to the surge in flu cases, additional vaccination clinics have been established by the health unit, with flu and COVID-19 vaccines also available at local pharmacies.