Ecology and risk assessment of E. coli O157:H7 and Salmonella typhimurium in the primary production chain of lettuce

Agriculture & Biology

• primary productivity 100%
• Escherichia coli O157 93%
• risk assessment 87%
• lettuce 83%
• Salmonella Typhimurium 81%
• grass silage 80%
• ecology 62%
• roughage 58%
• corn silage 54%
• straw 45%
• animal pathogens 36%
• diet 34%
• pathogens 29%
• Salmonella 29%
• serotypes 29%
• Lactuca sativa var. capitata 23%
• loam soils 20%
• soil management 19%
• sandy soils 18%
• green fluorescent protein 17%
• soil 17%
• fiber content 16%
• dairy cows 14%
• crude protein 14%
• concentrates 13%
• seedlings 10%
• cattle 10%