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One dead in E. coli outbreak; source of romaine still a mystery

One person has died in the E. coli outbreak linked to romaine lettuce. There are now 121 confirmed cases across 25 states. Investigators continue to look for the source of the implicated romaine, as well as how it became contaminated.

In the past week, public health officials confirmed 23 new cases and added three more states to the outbreak map. A week ago the case count stood at 98 people, making for a 23 percent increase in the number of infected people in seven days, according to the Centers for Disease Control and Prevention.