这一特定H1N 1毒株以前未曾有过人间传播。
This particular H1N1 strain has not circulated previously in humans.
这个毒株内少量遗传差异的含义也并不清楚。
The implications of the slight genetic differences in this strain are also not known.
结论麻疹病毒的减毒株与强毒株存在差异。
Conclusion The attenuated measles virus strain is different from strong virus strain.
通过上述试验结果证明，该分离毒株为伪狂犬病毒。
By the above experiment results, the isolated virus was identified as PRV.
到最后，你可能会产生一种具有易传染能力的新毒株。
You end up with a new strain that has easy transmissibility .
任何流感大流行都令人不安，特别是当一种新型毒株介入的时候。
Any flu epidemic is worrisome, especially when a new strain of flu bug is involved.
任何流感大流行都令人不安，特别是当一种新型毒株介入的时候。
Any flu epidemic is worrisome, especially when a new strain of flu bug is involved.
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