Samper-Cativiela Clara, Prieto Maria Esther, Collado Soledad, De Frutos Cristina, Branscum Adam J, Saez Jose Luis, Alvarez Julio
VISAVET Health Surveillance Centre, Universidad Complutense, 28040 Madrid, Spain.
Department of Animal Health, Faculty of Veterinary Medicine, Universidad Complutense, 28040 Madrid, Spain.
Animals (Basel). 2023 Oct 12;13(20):3181. doi: 10.3390/ani13203181.
Trends in human infections are assumed to be related to the distribution of the pathogen in the animal reservoir/food products, and cases in humans are most often linked to poultry and poultry products (eggs, meat). Therefore, ongoing national control programs (NCPs) in European Union Member States have the objective of monitoring and reducing its prevalence in commercial poultry flocks. Results from NCPs have shown certain factors (housing systems, season of sampling and if sampling is conducted by food business operators (FBOps) or competent authorities (CAs), among others) can influence detection rates, but associations are often not consistent. Here, we analyzed data from the Spanish NCP on 7216 laying hen flocks subjected to 36,193 sampling events over a six-year period to characterize its performance and identify variables influencing detection rates. Overall, 1205 sampling events were positive for spp. (any serovar) and 132 for . Enteritidis-. Typhimurium/monophasic. Bayesian multivariable models adjusting for multiple covariates concluded that sampling events later in the year, in caged flocks with older animals and conducted by CAs had increased odds of positivity for spp., revealing aspects linked with a differential estimation of levels in laying hen flocks.
人类感染趋势被认为与病原体在动物宿主/食品中的分布有关，人类病例大多与家禽及家禽产品（鸡蛋、肉类）相关。因此，欧盟成员国正在实施的国家控制计划（NCPs）旨在监测并降低其在商业家禽群中的流行率。国家控制计划的结果表明，某些因素（饲养系统、采样季节以及采样是由食品企业经营者（FBOps）还是主管当局（CAs）进行等）会影响检测率，但这些关联往往并不一致。在此，我们分析了西班牙国家控制计划中关于7216个蛋鸡群在六年期间接受36193次采样事件的数据，以描述其表现并确定影响检测率的变量。总体而言，1205次采样事件检测到 spp.（任何血清型）呈阳性，132次检测到肠炎沙门氏菌/鼠伤寒沙门氏菌单相型呈阳性。针对多个协变量进行调整的贝叶斯多变量模型得出结论，当年晚些时候进行的采样事件、在饲养老龄动物的笼养禽群中由主管当局进行的采样，检测到 spp. 呈阳性的几率增加，揭示了与蛋鸡群中 水平差异估计相关的方面。
