A sign is posted in front of a Taco Bell restaurant on May 01, 2024 in Richmond, California.Yum Brands has pulled onions from some Taco Bell, KFC and Pizza Hut locations following an E. coli outbreak tied to McDonald's."As we continue to monitor the recently reported E. coli outbreak, and out of an abundance of caution, we have proactively removed fresh onions from select Taco Bell, Pizza Hut and KFC restaurants," a Yum Brands spokesperson said in a statement to CNBC. "We will continue following supplier an ...