19???100???400???200???????????????????????????????????????? ???????????????????????????????????????????????????????? ?????? ??? ???? ?? ????????? ??????? ?? ?????????????????? ??? ???? ??????? ???????? ?? ??????????????????? ??? ?? ??? ??????????????.It is necessary to practice respiratory etiquette, such as by coughing into a flexed elbow, and to

19???100???400???200???? ??? ????? ?? ??? ????? ?? ??? ?? ??? ?? ?????? ?????? ??????? ?????? ?? ???? ??? ??? ?????. ????? ????? ??????? ?????? ?? ????? ?????? ?????? ??????? ??? ?????? ????? ???????.?????? ?? ?????? ?? ??????? ??????? ?? ?????? ???? ???? ????? ???. WHO provides world coordination and member condition help on vaccine safety checki