国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

National

Regional

Taiwan, HK, Macao

Special Coverage

Focus

Society

Profiles

Apart from H5N1, have other avian influenza viruses ever infected humans?

(WHO)
Updated: 2004-02-02 16:09

Yes. Two other avian strains have caused illness in humans, but the outbreaks were not as severe as those caused by the H5N1 strain.

The H9N2 strain, which is not highly pathogenic in birds, caused mild cases of illness in two children in Hong Kong in 1999 and in one child in mid-December 2003, also in Hong Kong.

An outbreak of highly pathogenic H7N7 avian influenza in birds, which began in the Netherlands in February 2003, caused the death of one veterinarian (from acute respiratory distress syndrome) two months later, and mild illness in 83 poultry workers and members of their families.