Ninety-seven percent of human disease from the pathogenic bacterium C. jejuni C. jejuni infections in Lancashire, England. Only 3 percent of cases were traced back to environmental contamination or wild animal sources, while 97 percent of cases were traced back to farm-raised chickens, cattle, and sheep. These results implicate livestock as the primary transmission route for the leading cause of gastroenteritis in the developed world, which is thought to infect 2 to 3 million people per year in the U.S. alone. originates in animals farmed for meat and poultry, according to a study by researchers at Lancaster University, Lancaster, U.K. Researchers analyzed DNA from 1,231 cases of

Wilson DJ, Gabriel E, Leatherbarrow AJ, et al. Tracing the source of campylobacteriosis. PLoS Genet. September 26, 2008;4(9):e1000203.

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