Montreal, Feb 26 (AFP/APP): Canadian authorities said Friday they have authorized a third Covid-19 vaccine, adding AstraZeneca's candidate to the approved list alongside the Pfizer-BioNTech and Moderna shots. "After completing their rigorous and					
                                
						Poorer nations face vaccine wait as the West locks down supply.					
                                
						A third attempt at a Karabakh ceasefire has quickly collapsed.					
                                
						Osaka beats Azarenka to win the US Open and third grand slam.					
                                


