CAJ | 학술논문

新城疫在国内很多地区已经成为一种地方流行性疫病。为了解新城疫在宁夏地区的流行情况，采用横断面研究方法对该地区的新城疫场间流行率进行了测定。基于随机抽样的策略选择120个养鸡场进行抽样和问卷调查，并采用病毒分离结合序列测定的方式对采集的样品进行检测分析。结果表明该地区新城疫的流行率为5.83%（95% CI 1.64%~10.03%）。遗传进化分析表明，所有分离到的病毒均属于基因VII型，与2006年该地区流行的新城疫病毒相比，病毒已发生明显的变异。
신성역재국내흔다지구이경성위일충지방류행성역병。위료해신성역재저하지구적류행정황，채용횡단면연구방법대해지구적신성역장간류행솔진행료측정。기우수궤추양적책략선택120개양계장진행추양화문권조사，병채용병독분리결합서렬측정적방식대채집적양품진행검측분석。결과표명해지구신성역적류행솔위5.83%（95% CI 1.64%~10.03%）。유전진화분석표명，소유분리도적병독균속우기인VII형，여2006년해지구류행적신성역병독상비，병독이발생명현적변이。
Newcastle disease is considered endemic in many regions of China. To determine the prevalence of Newcastle disease in Ningxia,a cross-sectional study was conducted. Chicken flocks(n=120)were randomly selected,and the disease status was ascertained by testing individual swab samples using virus isolation and sequencing. The estimated true prevalence was 5.83%(95% CI 1.64%-10.03%). Phylogenetic analysis revealed that all isolates belonged to genotype VII. Obvious evolution were identified in Newcastle disease viruses compared with the strains responsible for the Newcastle disease outbreaks in 2006.