Salmonella and E coli O157:H7 in Livestock at Agricultural Fairs Thomas E. Wittum, PhD Veterinary Preventive Medicine The Ohio State University.
Clinical and Epidemiological Aspects of Escherichia coli O157:H7 in Latin America Alejandro Cravioto, M.D., Ph.D Rosario Morales, M.D., Ph.D Armando Navarro,
