Pfizer and BioNTech say Covid vaccine works against UK, SA variants
A pharmacist dilutes the Pfizer Covid-19 vaccine while preparing it to administer to staff and residents at the Goodwin House Bailey's Crossroads, a senior living community in Falls Church, Virginia, on December 30, 2020.
Pfizer and BioNTech, makers of a Covid-19 vaccine, said on Thursday that their product is effective against coronavirus variants that have emerged in Britain and South Africa.