In general, the elderly are at greater risk, especially those over 70, because their immune systems are not as effective as they might have once been, and they are more susceptible to infections.
보통 70세 이상의 노인들이  훨씬 위험합니다. 면역계가 이전보다  기능을 못하기 때문이고 감염에 보다 취약하기 때문입니다.