Objective To find out the influence of patients with HBV infection and transfusion-transmitted virus (TTV) co-infection on their clinical outcome and the replication of HBV infection.

目的探讨输血传播病毒(TTV)与HBV混合感染的情况及其对肝脏病变程度和对HBV复制的影响。

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Usually chickens suffered co-infection with Infectious bronchitis, Newcastle virus or Escherichia, and led to forced-breathing and increased mortality.

通常与传染性支气管炎病毒，新城疫病毒和大肠杆菌等病原协同感染，导致呼吸道症状加剧，使死亡率增高。

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Results:The positive pathogenic respiratory viruses was 151(74.8%) in 202 NPA samples. Of 151 virus positive patients, 54(26.7%) were 2 viruses co-infection.

结果：202份样本中检出致病性病毒阳性的有151份（74.8%），其中2种以上病毒混合感染54份（26.7%）；

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