Two doses of Pfizer shot 88 percent effective at preventing the Delta variant while two doses of AstraZeneca are 67 percent effective.
Two doses of Pfizer or AstraZeneca’s COVID-19 vaccine are nearly as effective against the highly transmissible Delta coronavirus variant as they are against the previously dominant Alpha variant, according to a new study.
Research published in the New England Journal of Medicine on Wednesday showed the vaccines were highly effective against the Delta variant, now the dominant strain worldwide, provided a person had received two shots.
The study confirms headline findings given by Public Health England (PHE) in May about the efficacy of COVID-19 vaccines made by Pfizer-BioNTech and Oxford-AstraZeneca based on real-world data.
Wednesday’s study found that Pfizer was 88 percent effective at