RESUMO
Exposure assessment of some food born pathogens was investigated from two bacteria: Escherichia coli and Staphylococcus aureus from Mahasarakham University food canters. Food consumption surveys were collected from food samples (pork-boiled noodles, chicken rice, and Salad or Yum) for probability of exposure during July to August 2007. The data revealed that coliform bacteria were over the microbiological standard level in 5 of pork boiled noodles. Total plate count, coliform bacteria and E. coli were over the microbiological standard level in 4, 6 and 2 of chicken rice and 10, 8 and 4 of yum. In addition, S. aureus was found in yum (2 samples). Exposure assessments shown as the probability of having E. coli and S. aureus in food sample are 26.25 % and 23.86 %, respectively.