Distribution of Salmonella in Humans, Production Animal Operations and a Watershed in a FoodNet Canada Sentinel Site
Distribution of Salmonella in Humans, Production Animal Operations and a Watershed in a FoodNet Canada Sentinel Site
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DOI：
10.1111/zph.12281
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发表时间：
2017-02-01
影响因子：
2.4
通讯作者：
Pollari, F.
中科院分区：
文献类型：
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作者：
Flockhart, L.;Pintar, K.;Pollari, F.
沙门氏菌是一种重要的人类病原体，生产动物和水是已知的潜在来源。这项研究通过比较在同一地理区域和时间范围内在人类中发现的沙门氏菌菌株与在生产动物和水中检测到的沙门氏菌菌株，有助于深入了解沙门氏菌的流行病学。 55% 的肉鸡、30% 的猪、13% 的乳制品、10% 的牛粪样本和 23% 的水样本中发现了沙门氏菌。在农场层面，93% 的肉鸡、81% 的猪、32% 的牛肉和 30% 的奶牛场发现沙门氏菌。在所有测试来源中都发现了对公共健康具有重要意义的沙门氏菌菌株；然而，它们似乎在肉鸡中更为常见。本研究中的许多农场都是混合农场，因为农场里有不止一种生产动物物种。在样本和农场层面，纯牛肉农场的沙门氏菌患病率（分别为 5% 和 7%）明显低于有其他生产动物品种（例如家禽）的牛肉农场（分别为 12% 和 42%）（P0.05）。此外，许多混合农场在本研究中采样了不止一种商品，并且在农场的家禽和其他采样商品中发现了噬菌体类型和 PFGE 类似的沙门氏菌菌株。这些信息可以帮助提供所需的证据基础，以帮助确定干预措施和修改生产农业的最佳实践。
Salmonella is an important human pathogen, and production animals as well as water are known potential sources. This study helped provide insight into the epidemiology of Salmonella by comparing Salmonella strains found in humans to those detected in production animals and water in the same geographic area and time frame. Salmonella was found in 55% of broiler, 30% of swine, 13% of dairy, and 10% of beef manure samples and 23% of water samples. At the farm level, Salmonella was found on 93% of broiler, 81% of swine, 32% of beef and 30% of dairy farms. Salmonella strains of importance to public health were found in all sources tested; however, they appeared to be more common in the broilers. A number of the farms in this study were mixed farms, in that they had more than one production animal species on the farm. At both the sample and farm levels, beef-only farms had a significantly lower Salmonella prevalence (5% and 7%, respectively) than beef farms with additional production animal species (e.g. poultry) (12% and 42%, respectively) (P0.05). Additionally, a number of mixed farms had more than one commodity sampled for this study and similar Salmonella strains by phage type and PFGE were found in the poultry and the other sampled commodity on the farm. This information can help inform the evidence base needed to help target interventions and modify best practices in production agriculture.