Daignault Danielle, Guévremont Evelyne, Guillemette Jean-Marc, Messier Serge, Gottschalk Marcelo, Higgins Robert
Laboratoire d'Hygiène vétérinaire et alimentaire, Santé Canada, 3400 Casavant Ouest, Saint-Hyacinthe, Québec J2S 8E3.
Can Vet J. 2003 Mar;44(3):217-20.
Streptococcus agalactiae remains an important pathogen of dairy herds in Québec, but data about antigenic characteristics of this microorganism are sparse. This study was conducted to determine the variety of S. agalactiae serotypes in dairy herds in Québec. Two hundred and ninety-five isolates cultured from the milk of individual cows from 7 regions of Québec were serotyped. Sixty-two percent of the isolates were untypable. Among the 38% of typeable isolates, serotype III was found most frequently. In conclusion, the heterogeneity found among antigenic determinants of isolates from bovine milk suggests that an immunological method for the detection of S. agalactiae performed directly on bovine milk would not be a practical approach.
无乳链球菌仍然是魁北克奶牛群的一种重要病原体，但关于这种微生物抗原特性的数据很少。本研究旨在确定魁北克奶牛群中无乳链球菌血清型的种类。对从魁北克7个地区的个体奶牛乳汁中培养的295株分离株进行了血清分型。62%的分离株无法分型。在38%可分型的分离株中，血清型III最为常见。总之，牛乳分离株抗原决定簇之间存在的异质性表明，直接对牛乳进行无乳链球菌检测的免疫学方法并非一种实用的方法。
