Canada has just approved an updated COVID-19 vaccine to target the first highly contagious Omicron variant, with doses expected to start rolling out within days. But what exactly can we expect from these new shots when they land in the real world? New bivalent boosters could slow virus spread, but …

Canada has just approved an updated COVID-19 vaccine to target the first highly contagious Omicron variant, with doses expected to start rolling out within days. But what exactly can we expect from these new shots when they land in the real world? New bivalent boosters could slow virus spread, but …