LONDON, Dec 8: Britain began the mass-vaccination of its population against COVID-19 on Tuesday, becoming the first Western nation to do so in a global endeavour that poses one of the biggest logistical challenges in peacetime history.

LONDON, Dec 7: Shipments of the coronavirus vaccine developed by American drugmaker Pfizer and Germany’s BioNTech were delivered Sunday in the U.K. in super-cold containers, two days before it goes public in an immunization program that is being closely watched around the world.