Isolation and identification of E.coli pathogens from 9 swine farms in Fujian Province

Forteen strains of E.coli pathogens were isolated from 9 swine farms in Fuzhou, Fuqing, Zhangzhou, Putian, Shaowu, Xiamen, Quanzhou of Fujian, and were identified by Fujian Epidemic Prevention Station and analyzed by PCR with E.coli K88 and K99 specific PCR primers.The result showed that 10 strains belonged to normal E.coli.2 strains belonged to β-hemolytic E.coli and 2 strains belonged to E.coli K88.Insecticide tolerance of the isolated strains were higher than that of standard strains E.coli K88, K99 by drugsensitive test.