1. avian anatomy and physiology 
   家禽解剖和生理
2. The poultry industry continued to recover after the 1997 avian influenza outbreak. 
   自一九九七年发生禽流感后，家禽业仍在复苏。
3. No new outbreaks of avian influenza associated with the H5 virus occurred in local farms. 
   本地农场再没有发生与h5病毒有关的禽流感。
4. In response to an outbreak of H5N1 avian influenza in retail markets in May, a series of additional measures has been put in place to step up the avian flu surveillance system so as to protect public health. 
   鉴于数个零售市场在五月发生鸡只感染h5n1禽流感事件，政府采取一连串新措施，加强禽流感监察制度，保障公众卫生。
5. Additional hygiene measures were introduced in markets following the isolation of H9N2 avian influenza viruses from two children in March. 
   一九九九年三月，当局从两名小童身上取得的化验样本发现有h9n2禽流感病毒。事件发生后，当局在市场实施额外的卫生措施。该两名小童已经康复。

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