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

2????????????

3???????

4??????????

5??????

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

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

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

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

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

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