Vaccine distribution, the inability to pull off a mass campaign that could spark crowds and the absence of a national immunization registry are among the top hurdles facing Canada's COVID-19 vaccine rollout, says the head of the National Advisory Committee on Immunization (NACI). Promising week for vaccine candidatesQuach-Thanh's comments come after an encouraging week for COVID-19 vaccine candidates, with Moderna posting a 94.5 per cent success rate for its vaccine on Monday and Pfizer announcing a 95 per cent success rate two days later. WATCH | Ottawa gears up for vaccine distribution:Ottawa gearing up for COVID-19 vaccine rollout News Video 1:54 The federal government is finalizing its plan to roll out COVID-19 vaccines once they are available in Canada. About 1.6 million of those would come from four million doses slated for Canada from Pfizer during that time, she said, while 800,000 would come from two million doses anticipated from Moderna. WATCH | Manitoba premier on national vaccine criteria:

Source: CBC News November 22, 2020 18:45 UTC