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关注：1
2013-05-23 12:21
求翻译：These H9N2 vaccines initially limited the outbreaks and virus spread. However, despite multiple doses, the H9N2 vaccines became less effective, especially after 2007, and H9N2 influenza virus continues to circulate in vaccinated chicken flocks and has caused sporadic disease outbreaks是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
These H9N2 vaccines initially limited the outbreaks and virus spread. However, despite multiple doses, the H9N2 vaccines became less effective, especially after 2007, and H9N2 influenza virus continues to circulate in vaccinated chicken flocks and has caused sporadic disease outbreaks
问题补充： |
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2013-05-23 12:21:38
正在翻译，请等待...
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2013-05-23 12:23:18
这些H9N2疫苗最初限制的爆发和病毒传播。 然而,尽管多次服用H9N2疫苗已变得不那么有效,特别是在2007年后,和H9N2流感病毒继续流通,接种疫苗的鸡只的羊群,并已造成零星的疾病暴发
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2013-05-23 12:24:58
这些H9N2疫苗最初限制了爆发和病毒传播。 然而，尽管多药量， H9N2疫苗开始较不有效，特别是在2007年以后，并且H9N2流行性感冒病毒在被接种的鸡群继续流通和导致了分散疾病爆发
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2013-05-23 12:26:38
这些 H9N2 疫苗最初有限的爆发和病毒传播。然而，尽管多个剂量，H9N2 疫苗变得不那么有效，特别是 2007 年后，，H9N2 流感病毒继续在接种疫苗的鸡群中传播，导致散发性疾病疫情
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2013-05-23 12:28:18
正在翻译，请等待...
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