China's hardline zero Covid strategy is facing a fresh challenge from the rapid spread of the Delta variant, amid concerns over the efficacy of Chinese vaccines against the highly contagious strain.
원문출처 : https://www.cnn.com/2021/08/02/china/china-covid-delta-challenge-mic-intl-hnk/index.html
원문출처 : https://www.cnn.com/2021/08/02/china/china-covid-delta-challenge-mic-intl-hnk/index.html