신규확진 줄었지만…방역당국 괴롭히는 ‘재양성’ 사례 A concerning number of recovered COVID-19 patients here in the nation tested positive again. For now, the KCDC is carrying out investigations to find out the exact cause of this phenomenon. Lee Kyung-eun sheds light…
COVID-19 <%eb%b0%a9%ec%97%ad%eb%8b%b9%ea%b5%ad class="post-title"> COVID-19 mutations make achieving herd immunity difficult: KDCA