AstraZeneca, Pfizer vaccines effective against Delta COVID-19 variants-study
Summary Variants may cause few breakthrough infections in vaccinated Researchers find no evidence of widespread virus escape Past infection with B117/Alpha confers broad protection June 22 – 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 […]



