Donald Prater & Yum! Brands — Taco Bell

Donald Prater: Donald Prater, FDA's acting deputy commissioner for food, led the traceback investigation and provided updates on the outbreak.

Yum! Brands — Taco Bell: Yum! Brands — Taco Bell, a subsidiary of Yum! Brands, was the main restaurant chain linked to the contaminated lettuce. It removed the affected lettuce from its supply chain, but the outbreak has led to a significant drop in customer traffic and negative publicity.

Donald Prater: FDA acting deputy commissioner involved in traceback investigation.

Yum! Brands — Taco Bell: Voluntarily removed limited ingredients from select restaurants as a precaution; under investigation for possible link.