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Updated: Feb 10, 2026

An Optimized Hemagglutination Inhibition HI Assay to Quantify Influenza-specific Antibody Titers
Published on: December 1, 2017
Influenza in Canada, 2012-2013 season
The 2012-13 influenza season in Canada was moderately severe, with increased laboratory detections and hospitalizations compared to prior years. Influenza A(H3N2) and B strains circulated, impacting different age groups.
Area of Science:
- Public Health
- Epidemiology
- Virology
Background:
- Influenza surveillance is crucial for monitoring seasonal activity and informing public health interventions.
- Canada's FluWatch program provides comprehensive data on influenza trends.
Purpose of the Study:
- To summarize influenza activity in Canada during the 2012-13 season.
- To analyze epidemiologic and virologic data from the FluWatch surveillance program.
Main Methods:
- Utilized six primary indicators: laboratory detections, strain characterization, antiviral resistance, influenza-like illness consultations, regional activity levels, severe outcomes, and pharmacy surveillance.
- Collected data from August 26, 2012, to August 24, 2013.
Main Results:
- The season peaked nationally in late December 2012/early January 2013.
- Influenza A(H3N2) was predominant until March, followed by influenza B.
- Hospitalization rates were 25.0 per 100,000; Influenza A affected older adults, and Influenza B affected children.
Conclusions:
- The 2012-13 influenza season was moderately severe in Canada.
- Observed a significant increase in laboratory detections and hospitalizations compared to the preceding two mild seasons.
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