The Israeli government says its analysis has shown the Pfizer-BioNTech coronavirus vaccine appears to be less effective against infections caused by the Delta variant compared to other strains of Covid-19.
원문출처 : https://www.cnn.com/2021/07/06/health/israel-pfizer-efficacy-delta-variant-intl/index.html
원문출처 : https://www.cnn.com/2021/07/06/health/israel-pfizer-efficacy-delta-variant-intl/index.html