Federal officials discovered one source of a growing nationwide E.coli outbreak linked to romaine lettuce that has revived concerns over a leafy green industry that has long grappled with how to produce safe food. But questions still remained over the origins of most U.S. illnesses. The U.S. Food and Drug Administration on Friday said it has traced the whole-head romaine lettuce that sickened eight inmates in an Alaska jail to Harrison Farms in Yuma, Ariz., but that it is still looking for the source of chopped lettuce that...

Source: Wall Street Journal April 27, 2018 15:33 UTC