据监测，2003年以来，荷兰已经在野禽中发现多个亚型(H7N7、H5N8和H7N9)的流感病毒，并且发现感染高致病性流感(HPAI)的野禽粪便中含有大量病毒，较感染低致病性流感(LPAI)野禽的传染性高1 000倍，这种情况决定了荷兰禽流感的发生风险将长期存在。
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高致病性禽流感 HPAI ; highly pathogenic bird flu ; Highly Pathogenic Avian Influenza ; HSNI
高致病性禽流感病毒 HPAIV ; highly pathogenic avian influenza virus
高致病性禽流感疫区 highly pathogenic suspected cases
其中高致病性禽流感 GPAI
和高致病性猪流感病毒 Swine Influenza Virus ; SIR
引起的高致病性禽流感 Highly pathogenic AIV ; HPAI
此项研究为将来阻止可能的高致病性流感的爆发进行早期干预提供帮助。
The work suggests that it may be possible in future outbreaks of highly pathogenic flu to stem the tide of death through early intervention.
这些国家中，大多数历史上从未暴发过高致病性禽流感。
Most of these countries had never before experienced an outbreak of highly pathogenic avian influenza in their histories.
候鸟是否传播高致病性禽流感病毒？
Do migratory birds spread highly pathogenic avian influenza viruses?
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