Sweetgreen & Yum! Brands — Taco Bell

Sweetgreen: Sweetgreen, a salad chain, also saw reduced customer visits as consumers avoided lettuce and fresh produce during 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.