The investigation first began in 2017 following a complaint by a mother in South Korea who claimed her child developed a kidney disease after eating an undercooked meat patty sold by the fast food giant.
Jamie Lynn Ridd had pleaded guilty in June to buying insulin, E. coli., and other bacteria on the dark web that she allegedly used to inject into her roommate, potentially causing staph infections.
The Food and Drug Administration has released a statement ending the consumer advisory on romaine lettuce grown in the Salinas, California area.
The body has advised consumers, restaurants and retailers not to eat, sell or serve kits with a best-before date up to and including December 7, 2019.
Over 75,000 pounds of romaine lettuce have been recalled after federal authorities determined it was the likely source of an E. coli outbreak.
The Centers for Disease Control and Prevention has issued an advisory cautioning both consumers and sellers to avoid romaine lettuce grown in the Salinas, California region amid a multi-state E. coli outbreak.
Four children were sickened by the bacteria which is thought to have come from the petting zoo.
Antibiotic resistance is one of the "biggest threats to global health, food security, and development today" according to the World Health Organization.
The company will be addressing food safety issues with its staff following an E. coli outbreak.