| frequency of escherichia coli o157:h7 in children with diarrhoea in zahedan, islamic republic of iran. | escherichia coli o157:h7 has been implicated in diarrhoea, dysentery, haemorrhagic colitis and uraemic haemolytic syndrome but is not routinely cultured in laboratories. we tested 322 samples from children referred with diarrhoea to a clinic in zahedan, islamic republic of iran. there were 21 sorbitol-negative e. coli isolated; serotyping revealed 4 strains positive for o157, out of which only 2 strains were identified as e. coli o157:h7. both cases were boys, aged 1.5 and 4 years respectively. ... | 2008 | 19161073 |