为调查输血传播病毒(TTV)在我国猪群中的感染状况,本研究对2009年采自29个省市的1990份猪血清样品进行了TTV1、TTV2的双重PCR方法检测,并对结果进行了统计分析.结果表明,我国猪群中TTV总的感染率为63.37％(1261/1990),其中TTV1感染率为55.88％(1112/1990),TTV2为32.91％ (655/1990),TTV1和TTV2双重感染率为25.43％(506/1990).进而对样品的地区性分布特征、样品来源等影响因素进行分析,表明我国猪群中TTV感染率以东北地区最高,西北地区最低.样品来源不是影响感染率的关键因素.%To investigate the prevalence and distribution of Torque teno virus (TTV) in swine herds in China, a total of 1,990 swine serum samples were collected from 29 provinces in 2009, and detected using a duplex PCR assay for detection of TTV 1 and TTV2. The results indicate that total of swine TTV positive was 63.37% (1261/1990), and it was 55.88% (1112/1990) for TTVl, 32.91% (655/1990) for TTV2 and 25.43% (506/1990) for TTVl and TTV2 co-infections. Statistical analyses demonstrated that the highest positive rate of swine TTV was found in Northeast China and the lowest rate in Southeast China. Geographic origin of samples was not a critical factor for the prevalence of TTV.
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