以下为句子列表：
英文: They should receive antiviral treatment to reduce infectivity and to prevent further progression of liver disease.
中文: 他们应该接受抗病毒治疗以减少病毒活动和阻止肝病的进一步进展。
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英文: In cowpea sap, the thermal inactivation point was between -0℃, the dilution end point was between 0~(-)-0~(- ) and infectivity was retained for - days, It was transmissible by cowpea seeds in high level (.9%—.7%) and by Myzus persicae.
中文: 其稀释限点0~(-)-0~(- ),致死温度—0℃,体外存活期—天。 种子传毒率为.9—.7%。
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英文: The degree of infectivity varies in its location, i.e.base, middle and top of the midvein.
中文: 中脉的不同部位(基部、中部和顶部)病菌侵染的程度有明显不同。
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英文: Infectivity Comparison between A/California/7/2009 and A/California/4/2009
中文: A/California/7/2009与A/California/4/2009病毒感染力比较
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英文: Infectivity and pathogenicity of Newcastle disease virus strains of different avian origins in ducklings
中文: 不同禽源和不同毒力新城疫病毒对鸭的感染性
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