Article content Canada should roll out second doses ‘as soon as possible’: NACI Pamela and Lorry Wilson receive their COVID-19 vaccine from Connie Wong, Registered nurse, at the Telus Convention Centre in Calgary on Tuesday, April 6, 2021. Photo by Leah Hennel / ALBERTA HEALTH SERVICES Canada’s expert advisory panel on vaccines says the country should deliver second doses of COVID-19 vaccines as soon as possible, given the increasing supply. The National Advisory Committee on Immunization says those at highest risk of dying or becoming severely ill should be prioritized for second shots at the same time or after the remaining eligible population receives their first dose.