prevalence and characterization of verotocytoxin producing escherichia coli o157 from diarrhoea patients in morogoro, tanzania.escherichia coli o157:h7 is an important agent of haemorrhagic colitis and haemolytic uraemic syndrome in children less than five years old and elderly people. the objective of this study was to investigate the prevalence of verotocytoxin producing e. coli 0157 (vtec o157) among human patients with diarrhoea in morogoro, tanzania. faecal samples originating from 275 human patients with diarrhoea were screened for presence of e. coli o157:h7. a total of 96 e. coli isolate were identified. of thes ...200819024340
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