Us CDC Says Since April Confirmed Avian Influenza A(H5) Virus Infections In 52 People In US; Aware Of Human Case Of H5N1 Bird Flu Reported In Canada & Is In Communication With Public Health Agency Of Canada
美國疾控中心表示自4月以來,美國已有52人確診感染H5禽流感病毒;已知加拿大報告了H5N1禽流感的人類病例,並與加拿大公共衛生機構保持溝通。