Irrigation of Lettuce With Reclaimed Water: Health Risk Comparison Among United States, Mexico and Brazil Pathogen Escherichia coli Norovirus Exposure Ingestion Lettuce Location Brazil QMRA II Institute July 2013 Keywords North America Norovirus Brazil Ingestion Escherichia Coli Read more about Irrigation of Lettuce With Reclaimed Water: Health Risk Comparison Among United States, Mexico and Brazil