CDC “美서 코로나 항체 보유 인구 83%”… 백신 접종율보다 높다 According to the U.S. Centers for Disease Control and Prevention… 83 percent of the country’s population aged over 16 have some level of immunity against COVID-19. The center conducted a…
COVID-19 <%ed%95%ad%ec%b2%b4 class="post-title"> COVID-19 mutations make achieving herd immunity difficult: KDCA %ed%95%ad%ec%b2%b4>