MethodsThe toxic genes(stx 1 and stx 2),and genes of h lyA,eaeA,rfb O111 and rfb O157 of all the strains were determined with multi-PCR technology.

• 方法 应用多重PCR技术 ,检测所有菌株志贺毒素 (stx1和stx2 )、hlyA、eaeA、rfbO111和rfbO15 7基因。