Reports say a strain of bacteria has jumped from humans to chickens, according to researchers at the Roslin Institute of the University of Edinburgh. This is believed to be the first evidence of a crossover of a bacterial pathogen from humans to animals.

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The bacteria staphylococcus aureus was shown via genetic testing to have crossed over from humans to animals approximately 40 years ago when intensive poultry farming practices began. Proceedings of the National Academy of Sciences published the study.