Serotypes of Streptococcus agalactiae cultured from dairy milk samples in Québec

Danielle Daignault, Evelyne Guévremont, Jean Marc Guillemette, Serge Messier, Marcelo Gottschalk, Robert Higgins

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


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 untypeable. 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.

Original languageEnglish (US)
Pages (from-to)217-220
Number of pages4
JournalCanadian Veterinary Journal
Issue number3
StatePublished - Mar 1 2003
Externally publishedYes

ASJC Scopus subject areas

  • veterinary(all)


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