This year, hundreds of people got diarrhea from Salmonella-contaminated beef, tahini, kratom, even pet guinea pigs, to name just a few. Salmonella bacteria normally hang out in animal intestines — and now, scientists are using machine learning to identify which animal’s intestines emitted the unpleasant and dangerous bacteria.
Researchers led by Xiangyu Deng at the University of Georgia trained an algorithm to recognize genetic differences between Salmonella strains pooped out by four common hosts: pigs, cows, poultry, and wild birds. When the team tested the algorithm on Salmonella genomes from eight outbreaks over the past 20 years, it correctly identified the animal sources for seven of them, according to a study published online...
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