| prevalence of ehec o157:h7 in patients with diarrhoea in lagos, nigeria. | the prevalence of sorbitol-nonfermenting escherichia coli o157:h7 (ehec) was assessed in 100 patients with diarrhoea by stool culture on sorbitol macconkey agar. the cytotoxicity of the ehec strains was analysed by vero cell assay and the antimicrobial susceptibility pattern of the isolates was determined. detection rate of ehec o157:h7 was 6%. five of the six patients were males. three of the isolates were from children and one was from a teenager. all strains induced cytotoxic effects in the v ... | 2000 | 11211970 |