A German company working with US pharmaceutical giant Pfizer has begun human trials of a potential Covid-19 vaccine that could supply millions by the end of the year, according to the two firms.
원문출처 : https://www.cnn.com/2020/04/29/europe/germany-pfizer-coronavirus-vaccine-test-intl/index.html
원문출처 : https://www.cnn.com/2020/04/29/europe/germany-pfizer-coronavirus-vaccine-test-intl/index.html