Mittal K R, Barnum D A, Tizard I R
Am J Vet Res. 1981 Feb;42(2):311-3.
Three clinically normal cows were inoculated with viable Yersinia enterocolitica O9 by the intramammary route. This provoked an increase in the somatic cell count in milk from the inoculated quarter, but no obvious clinical response. Yersinia enterocolitica was isolated only sporadically from these cattle after inoculation. All cows showed a marked serologic response to Y enterocolitica and Brucella abortus. The anti-Brucella response provoked by inoculation of Yersinia was sufficient to render milk and serum Brucella-seropositive, as measured by the standard milk ring test, the quantitative milk ring test, and the serum agglutination test.
通过乳腺内途径给三头临床正常的奶牛接种活的小肠结肠炎耶尔森菌O9。这导致接种乳区牛奶中的体细胞计数增加，但未出现明显的临床反应。接种后仅偶尔从这些牛身上分离出小肠结肠炎耶尔森菌。所有奶牛对小肠结肠炎耶尔森菌和流产布鲁氏菌均表现出明显的血清学反应。通过标准乳环试验、定量乳环试验和血清凝集试验测定，接种耶尔森菌引发的抗布鲁氏菌反应足以使牛奶和血清布鲁氏菌血清学呈阳性。
