[사회]Pfizer’s second dose of vaccination started for medical staff…”treatment without worrying about infection”
![[사회]Pfizer’s second dose of vaccination started for medical staff…”treatment without worrying about infection”](https://image.ytn.co.kr/general/jpg/2021/0320/202103201554342117_t.jpg "[사회]Pfizer’s second dose of vaccination started for medical staff…”treatment without worrying about infection”")