Two doses of Pfizer, AstraZeneca shots effective against Delta variant: study – Reuters
Vials with Pfizer-BioNTech and AstraZeneca coronavirus disease (COVID-19) vaccine labels are seen in this illustration picture taken March 19, 2021. REUTERS/Dado Ruvic/Illustration/File PhotoLONDON, July 21 (Reuters) – Two doses of Pfizer (PFE.N) or AstraZeneca’s…
