AstraZeneca, Pfizer vaccines effective against Delta COVID-19 variants – study

COVID-19 vaccines made by AstraZeneca (AZN.L) and the Pfizer-BioNTech (PFE.N), (22UAy.DE) alliance remain broadly effective against Delta and Kappa variants of the COVID-19 causing virus, which were first identified in India, according to a scientific study, underpinning a continued push to deliver the shots. MORE..