Results showed that erm (B) was the main erythromycin resistant determinant but tet(M) and tet (O) are the main tetracycline resistant determinants. 4 Ribotypings of S.suis serotype 2 strains HA9801 and 12 were deteced.

• 发现erm(B)是7型菌株的主要的红霉素抗性决定簇，而 tetM）及tet （）是7型菌株的主要的四环素抗性决定簇。