Moderna’s coronavirus vaccine Wednesday, making it the second shot officially to roll out in the country.The news of Moderna’s approval comes after the first doses of Pfizer’s COVID-19 were administered to Canadians last week.Moderna said its vaccine is nearly 94.1 per cent effective in protecting people from coronavirus, and requires two doses, 28 days apart.Unlike Pfizer’s COVID-19 vaccine, which has strict cold-chain requirements, Moderna’s shot can survive in regular freezers, meaning it’s prioritized for delivery to the territories, remote Indigenous communities and long-term care sites.Canada signed a deal in September for 20 million doses to be delivered at the beginning of 2021, with the option of increasing the supply to 56 million.