Anderson P L, Morrison R B, Thawley D G, Molitor T
Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul 55108.
J Am Vet Med Assoc. 1989 Dec 15;195(12):1709-11.
Data were collected from 39 Minnesota swine farms quarantined for pseudorabies virus (PRV) infection. Each herd was serologically evaluated for antibodies to PRV in the sows, boars, and finishing pigs. To identify PRV-seropositive swine herds, the Kappa statistic was used to estimate the effectiveness of evaluating the PRV serostatus of boars or of finishing pigs. Using the serostatus of all herd boars, the sensitivity (with 95% confidence interval) of identifying PRV-infected herds was 58 +/- 22%, and the specificity was 100 +/- 0%; Kappa statistic was 0.55. Using the serostatus of a representative sample of finishing pigs, the sensitivity of identifying PRV-infected herds (with 95% confidence interval) was 63 +/- 22%, and specificity was 87 +/- 23%; Kappa statistic was 0.40. The PRV serostatus of herd boars or of a representative sample of finishing pigs did not accurately reflect the PRV serostatus of the herd.
数据收集自39个因感染伪狂犬病病毒（PRV）而被隔离的明尼苏达州猪场。对每个猪群的母猪、公猪和育肥猪进行了PRV抗体的血清学评估。为了确定PRV血清学阳性猪群，使用Kappa统计量来评估对公猪或育肥猪的PRV血清状态评估的有效性。利用所有猪群公猪的血清状态，识别PRV感染猪群的敏感性（95%置信区间）为58±22%，特异性为100±0%；Kappa统计量为0.55。利用育肥猪代表性样本的血清状态，识别PRV感染猪群的敏感性（95%置信区间）为63±22%，特异性为87±23%；Kappa统计量为0.40。猪群公猪或育肥猪代表性样本的PRV血清状态不能准确反映猪群的PRV血清状态。
