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Canadian drugmaker says its COVID-19 vaccine is effective

The Associated Press A Canadian drugmaker says its plant-based COVID-19 vaccine showed strong protection against the coronavirus. Medicago said Tuesday that its two-dose vaccine was 71% effective at preventing COVID-19 infection in a large, late-stage study. It included several circulating variants, but not the emerging omicron variant. The company’s technology uses plants to grow virus-like

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