????:1?????????:??????

2?????

3????????

4?????????

5???????????

????6????????5?,??????????,??????H5N2??????????????

?,????,???????????????4?????17??????????????????????????????,???4???????????24??,????????????

?????5?22???????????????,?,???????H5N2???????

????,???????H5N2???,??????H5????????????????????????,???????????????????,???????????????H5N2??????????

?,?,???????????H5??,????????????????,?H5N2???????(????????????????????????? ?????????)

??????????:?????????????