美 연구팀 “코로나19 걸린 사람 면역 수년간 유지될 수 있어” A new study shows people who have contracted and recovered from COVID-19 could remain immune for years. According to scientists at a medical institute in California,… participants who had COVID-19…
COVID-19 <%ea%b2%bd%ec%a0%9c class="post-title"> First Americans could be vaccinated on Dec. 11 %ea%b2%bd%ec%a0%9c>