Isolation and antibiogram of Escherichia coli O157: H7 from diarrhoeic calves in urban and peri-urban dairy farms of Hawassa town.

Our findings revealed that calf diarrhoea is still a major health problem of calves in the study area. Hence, improved calf and farm management practice, an ad libitum quantity of colostrum, and good farm hygienic practices should be ensured. This study also revealed that some antibiotic-resistant E. coli O157:H7 isolates need to be further investigated for their public health implications.