When the highly infectious Delta variant hit China in the summer, some public health experts were hopeful that the country could soon receive an immunity boost from BioNTech's highly effective mRNA Covid-19 vaccine.
원문출처 : https://www.cnn.com/2021/12/13/china/china-western-mrna-vaccine-mic-intl-hnk/index.html
원문출처 : https://www.cnn.com/2021/12/13/china/china-western-mrna-vaccine-mic-intl-hnk/index.html