No E. Coli Found in Samples of McDonald's Beef Patties, Officials SayThe company said it would put Quarter Pounders back on the menu, without the raw onions that were considered the likely source of the bacteria.
Source: No E. Coli Found in Samples of McDonald's Beef Patties, Officials Say (https://www.nytimes.com/2024/10/27/health/mcdonalds-ecoli-quarter-pounders.html)