| risk of escherichia coli o157:h7, non-o157 shiga toxin-producing escherichia coli, and campylobacter spp. in food animals and their products in qatar. | escherichia coli o157:h7, non-o157 e. coli, and campylobacter spp. are among the top-ranked pathogens that threaten the safety of food supply systems around the world. the associated risks and predisposing factors were investigated in a dynamic animal population using a repeat-cross-sectional study design. animal and environmental samples were collected from dairy and camel farms, chicken processing plants, and abattoirs and analyzed for the presence of these pathogens using a combination of bac ... | 2015 | 26408129 |