HONOLULU (KHON2) -- An E. coli outbreak has led several restaurants, including Taco Bell, Pizza Hut, and KFC, to remove fresh onions from select locations as a precautionary measure. Get Hawaii's latest morning news delivered to your inbox, sign up for News 2 You While food safety officials are investigating the outbreak associated with McDonald's Quarter Pounder, no cases have been linked to Taco Bell or other Yum Brands restaurants. Lien, foreclosure threats add anxiety over insurance-driven condo fees Federal officials are currently examining the onions and beef patties used in Quarter Pounders. The outbreak has resulted in one fatality and has sickened dozens of individuals. Download the free KHON2 app for iOS or Android to stay informed on the latest news However, McDonald's locations in Hawaii are not affected by this situation.