Allelic variation and prevalence of serum opacity factor among the Streptococcus suis population.

Abstract excerpt

Serum opacity factor of Streptococcus suis (OFS) has recently been identified as a virulence determinant of an S. suis strain. In this study, we investigated the prevalence and variations of the ofs gene among 108 S. suis isolates from diseased and healthy pigs, and human patients. PCR screening and sequencing analysis showed that besides the ofs gene reported already (designated type 1), there were three allelic...

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