一个与大量麻雀死亡相关的奶牛场肠炎沙门氏菌鼠伤寒血清型的案例研究。
A case study on Salmonella enterica serovar Typhimurium at a dairy farm associated with massive sparrow death.
作者信息
Tamamura Yukino, Uchida Ikuo, Tanaka Kiyoshi, Nakano Yoshinori, Izumiya Hidemasa, Takahashi Tatsufumi, Kikuchi Naoya
机构信息
Hokkaido Research Station, National Institute of Animal Health, 4 Hitsujigaoka, Toyohira, Sapporo, 062-0045, Hokkado, Japan.
Bacterial and Parasitic Diseases Research Division, National Institute of Animal Health, Tsukuba, 305-0856, Ibaraki, Japan.
出版信息
Acta Vet Scand. 2016 Apr 26;58:23. doi: 10.1186/s13028-016-0205-8.
BACKGROUND
Salmonella enterica Typhimurium (S. Typhimurium) is the most common cause of bovine salmonellosis in Japan and where it is also cause of salmonellosis in wild birds. In 2008, a postpartum cow at a dairy farm developed diarrhea caused by S. Typhimurium. The herd was extensively surveilled for Salmonella sp. and we characterized bacterial isolates from this and other cows to determine the source of infection.
RESULTS
Eight isolates of S. Typhimurium from cattle were identified as phage type DT40 and showed a 100 % similarity by pulsed-field gel electrophoresis and the same or similar multiple-locus variable-number tandem-repeat analysis profiles as those of S. Typhimurium isolated from dead sparrows (Passer montanus) collected at Asahikawa in 2006. S. Typhimurium DT40 was considered to be a major cause of high sparrow mortality in Hokkaido in 2005-2006 and 2008-2009, suggesting that DT40 maintained in sparrows was transmitted to cattle.
CONCLUSIONS
S. Typhimurium DT40 may be transmitted from sparrows to dairy cattle.
背景
鼠伤寒沙门氏菌是日本牛沙门氏菌病最常见的病因，在日本它也是野生鸟类沙门氏菌病的病因。2008年，一家奶牛场的一头产后母牛感染了鼠伤寒沙门氏菌，引发腹泻。对该牛群进行了沙门氏菌的广泛监测，并对来自这头母牛和其他母牛的细菌分离株进行了特征分析，以确定感染源。
结果
从牛身上分离出的8株鼠伤寒沙门氏菌被鉴定为噬菌体类型DT40，通过脉冲场凝胶电泳显示出100%的相似性，并且与2006年在旭川采集的死麻雀（家麻雀）中分离出的鼠伤寒沙门氏菌具有相同或相似的多位点可变数目串联重复分析图谱。鼠伤寒沙门氏菌DT40被认为是2005 - 2006年和2008 - 2009年北海道麻雀高死亡率的主要原因，这表明在麻雀中存在的DT40传播到了牛身上。
结论
鼠伤寒沙门氏菌DT40可能从麻雀传播到奶牛。
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