Schiemann D A, Fleming C A
Can J Microbiol. 1981 Dec;27(12):1326-33. doi: 10.1139/m81-203.
Examination of the throat flora from swine in Ontario for Yersinia enterocolitica found the incidence of serotype O:3 to vary from 20% from tonsils to 50% for throat swabs and 55% for tongues. In contrast, there were no isolations of serotype O:3 from throat swabs taken from swine in the western provinces of British Columbia and Alberta. This incidence of serotype O:3 in swine correlates well with the human incidence of the same serotype which is 81% for all human isolations of Y. enterocolitica in the eastern provinces and 4% in the western provinces of Canada. The opposite relationship is true for serotype O:5,27, which was not isolated from Ontario swine but occurred with a frequency of 3% in British Columbia swine and 24% in Alberta swine. The relative incidence in humans for serotype O:5,27 is 5% of all isolations of Y. enterocolitica in Ontario, 8% in British Columba, and 26% in Alberta. Serotype O:8, the most common human serotype in the western provinces (40% of all isolations), was not isolated from swine in this survey. The majority of Y. enterocolitica cultures of biotype 4 (serotype O:3) and biotype 2 (serotype O:5,27) were positive for autoagglutination, a test which has been associated with virulence, whereas all cultures of biotype 1 were negative. The results from this study strongly suggest that swine are an important source of human infections with both serotype O:3 and O:5,27 of Y. enterocolitica. The source of human infections in western Canada with serotype O:8 remains unidentified.
对安大略省猪的咽喉菌群进行小肠结肠炎耶尔森氏菌检测发现，O:3血清型的发生率从扁桃体的20%到咽喉拭子的50%以及舌头的55%不等。相比之下，从英属哥伦比亚省和阿尔伯塔省西部省份的猪身上采集的咽喉拭子中未分离出O:3血清型。猪中这种O:3血清型的发生率与同一血清型在人类中的发生率密切相关，在加拿大东部省份，小肠结肠炎耶尔森氏菌所有人类分离株中该血清型的发生率为81%，而在西部省份为4%。对于O:5,27血清型则情况相反，该血清型未从安大略省的猪中分离出来，但在英属哥伦比亚省猪中的出现频率为3%，在阿尔伯塔省猪中为24%。O:5,27血清型在人类中的相对发生率在安大略省小肠结肠炎耶尔森氏菌所有分离株中为5%，在英属哥伦比亚省为8%，在阿尔伯塔省为26%。O:8血清型是西部省份最常见的人类血清型（占所有分离株的40%），在本次调查中未从猪中分离出来。生物型4（血清型O:3）和生物型2（血清型O:5,27）的大多数小肠结肠炎耶尔森氏菌培养物自动凝集试验呈阳性，该试验与毒力有关，而生物型1的所有培养物均为阴性。这项研究的结果有力地表明，猪是人类感染小肠结肠炎耶尔森氏菌O:3和O:5,27血清型的重要来源。加拿大西部人类感染O:8血清型的来源仍不明。
