(ENG SUB) [단독] "백신 나올 만하면 둔갑"…벌써 '70여 개' (2020.07.22/뉴스데스크/MBC) More than 70 mutations of COVID-19 2020-07-23 10:34:11 (ENG SUB) [단독] "백신 나올 만하면 둔갑"…벌써 '70여 개' (2020.07.22/뉴스데스크/MBC) More than 70 mutations of COVID-19
