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food safety

This spring, millions of Americans worried that salad was no longer safe to eat: The U.S. was hit by the largest E. coli outbreak in a decade, with 172 people in 32 states sickened by contaminated romaine lettuce. Eighty-nine of those individuals were hospitalized, and at least five died.

Disease hunters are using genetic sequencing in their investigation of the ongoing food poisoning outbreak linked to romaine lettuce, a technique that is revolutionizing the detection of germs in food.