Burger King, KFC, Pizza Hut and Taco Bell remove onions from some places amid E. coli outbreak

Amid a deadly E. coli outbreak linked to McDonald's Quarter Pounders, Burger King and Yum Brands are pulling fresh onions from some of their own locations.

Yum is yanking the topping from some KFC, Pizza Hut and Taco Bell locations "out of an abundance of caution," Yum said Thursday in a statement to CBS News. Yum did not specify the locations impacted. "We will continue following supplier and regulatory guidance to ensure the ongoing safety and quality of our food," a spokesperson for Yum said.

Burger King said it has asked the 5% of its locations that received onions from a Taylor Farms Colorado facility to dispose of them two days ago. "We are in the process of restocking them from other facilities," according to a spokesperson.