• COVID-19 UPDATES: WHO says it was 'extremely unlikely' that coronavirus originated from a lab
원문출처 : https://www.cnn.com/2021/02/09/world/astrazeneca-vaccine-south-africa-variant-intl/index.html
원문출처 : https://www.cnn.com/2021/02/09/world/astrazeneca-vaccine-south-africa-variant-intl/index.html