Effectiveness of flu shot under 20 per cent for dominant strain this season: experts

TORONTO — Researchers say the effectiveness of this season’s flu shot has been low, with the vaccine preventing only 10 to 20 per cent of infections caused by the dominant H3N2 strain affecting Canadians. Lead researcher Danuta Skowronski of the BC Centre for Disease Control says that’s in line with what Australia experienced during the southern hemisphere’s flu season, which ended in […]