A single farm in California was the source of this fall's multistate E. coli outbreak linked to romaine lettuce.

A single farm in California was the source of this fall's multistate E. coli outbreak linked to romaine lettuce. https://t.co/PWBwPpPbZT pic.twitter.com/prJMMF7iwP

— U.S. News (@usnews) December 16, 2018