Canada’s first homegrown COVID-19 vaccine shows high efficacy – CBC

Trial occurred before omicron variant; Health Canada submission is imminent

Dec 07, 2021

Canada’s first homegrown COVID-19 vaccine has shown high efficacy against infection during Phase 3 clinical trials, the drugmakers behind the plant-based shot reported Tuesday, fuelling hopes it could soon get a stamp of approval for use.

Medicago, a biopharmaceutical company headquartered in Quebec City, and British-American vaccine giant GlaxoSmithKline (GSK) are now gearing up for their final regulatory submission to Health Canada.

The vaccine’s overall efficacy rate against all virus variants studied was 71 per cent, with a higher efficacy rate of 75 per cent against COVID-19 infections of any severity from the dominant delta variant, the companies said in a news release.

The results followed a global, Phase 3, placebo-controlled study of the two-dose vaccine that was launched last March. The newly discovered omicron variant — recently confirmed in various countries around the world, including Canada — was not circulating during the trial period.

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