AstraZeneca’s COVID-19 vaccine data fails to impress Wall Street analysts with its effectiveness in clinical trials MarketWatchCoronavirus digest: Germany may start vaccinating in December DW (English)Research suggests long term protection from COVID-19 vaccines Khmer TimesCoronavirus vaccine: How long immunity lasts, multiple jabs probably required NEWS.com.auOne crore healthcare workers in India to get covid vaccine in 1st phase MintView Full Coverage on Google News