Kidder J D, Wade S E, Richmond M E, Schwager S J
New York Cooperative Fish and Wildlife Research Unit, Department of Natural Resources, Cornell University, Ithaca 14853.
J Parasitol. 1989 Dec;75(6):870-4.
The prevalence of patent Baylisascaris procyonis infection in raccoons was determined by examining fecal samples collected between July 1986 and May 1987 in Ithaca, New York. September, October, and November had the highest prevalence of infection (35-48%). Significant differences (P less than 0.001) were found when months were grouped by season to test the hypothesis that a fecal sample's probability of being positive does not vary from month to month. Fall was the season contributing most to the overall chi-square statistic. Host sex/age class and prevalence of patent infection were investigated. The raccoons were aged as either juveniles or adults. A significantly higher prevalence of patent infection (P less than 0.001) was found in juveniles when compared to adults. No statistically significant difference was found in other comparisons of host sex and age. Contingency analysis tested the independence of sex/age class/season and presence of eggs. The results of the test were significant (P less than 0.001).
通过检查1986年7月至1987年5月间在纽约伊萨卡收集的浣熊粪便样本，确定了浣熊感染犬弓首蛔虫成虫的患病率。9月、10月和11月的感染率最高（35%-48%）。当按季节对月份进行分组以检验粪便样本呈阳性的概率不会随月份变化这一假设时，发现了显著差异（P<0.001）。秋季是对总体卡方统计量贡献最大的季节。对宿主的性别/年龄类别和成虫感染患病率进行了调查。浣熊分为幼年或成年。与成年浣熊相比，幼年浣熊的成虫感染患病率显著更高（P<0.001）。在宿主性别和年龄的其他比较中未发现统计学上的显著差异。列联分析检验了性别/年龄类别/季节与虫卵存在情况的独立性。检验结果具有显著性（P<0.001）。
