这是因为病毒性疾病一般发生在病毒的宿主从某个物种跳跃到另一个物种，继而进化以利用新宿主的方式变异之后。
That is because new viral diseases generally happen when a virus mutates in a way that allows it to jump species, and then continues to evolve to exploit its new host.
猪繁殖和呼吸综合症是近年来国内外引人注目的一种新的病毒性猪传染病。
Pig Rebreeding and PRRS is a new noticeable viral infectious pig disease at home and abroad.
通过探讨病毒与宿主相互关系，为预防、治疗、诊断病毒性疾病提供新的理论依据及相应对策。
By probing into the interrelation of the virus and the host we can provide a groundwork for a new theory and a strategy to prevent, treat and diagnose the virus disease.
病毒性心肌炎视频广告是一种较新的市场，并在短短短的时间设法改变规则的传统广告。
Viral myocarditis video ad is a relatively new market, and in just a short period of time trying to change the rules of traditional advertising.
“除了艾滋病感染新诊病例外，我们还鉴别出大量的病毒性肝炎新诊病例，特别是丙型肝炎，”作者指出。
"We identified a high number of newly diagnosed viral hepatitis cases, especially hepatitis c, in addition to the HIV diagnoses," comment the authors.
“除了艾滋病感染新诊病例外，我们还鉴别出大量的病毒性肝炎新诊病例，特别是丙型肝炎，”作者指出。
"We identified a high number of newly diagnosed viral hepatitis cases, especially hepatitis c, in addition to the HIV diagnoses," comment the authors.
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