Canada authorises Pfizer Covid vaccine booster for adults

A vial labelled with the Pfizer-BioNTech coronavirus disease (Covid-19) vaccine is seen in this illustration picture taken March 19, 2021. Photo :Reuters
Canada on Tuesday authorised the use of Pfizer/BioNTech's Covid-19 vaccine as a booster shot for people 18 years of age and older, Health Canada said in a statement.