Distribution of capsular serotypes and virulence markers of Streptococcus suis isolated from pigs with polyserositis in Korea
2010
Kim, Duyeol | Han, Kiwon | Oh, Yeonsu | Kim, Chung Hyun | Kang, Ikjae | Lee, Jeehoon | Gottschalk, Marcelo | Chae, Chanhee
The objective of this study was to determine the capsular serotypes and potential virulence factors of Streptococcus suis isolated from pigs with polyserositis. Among the 24 isolates evaluated, serotype 3 [7 (29%) of the isolates] and serotype 4 [5 (21%)] were the most common. The isolates were also studied for the presence of the genes mrp, epf, and sly, which encode muramidase-released protein (MRP), extracellular factor (EF), and suilysin (SLY), respectively. Of the 24 isolates, 8 carried mrp: 4 of serotype 3, 2 of serotype 2, and 2 of serotype 4. One mrp+ isolate (serotype 2) also carried the epf gene. All 24 isolates carried the sly gene. The serotype and genotype distribution greatly differed from that reported for isolates from pigs with other clinical manifestations of S. suis infection in other countries.
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