At least 104 people have been sickened, with 34 hospitalized, in an outbreak of E. coli food poisoning tied to onions served on McDonald's Quarter Pounder hamburgers, federal health officials said Wednesday. Cases have been detected in 14 states, according to an update from the U.S. Centers for Disease Control and Prevention. One person died in Mesa County, Colorado, and four people have developed a potentially life-threatening kidney disease complication. Read more at: https://www.9news.com/article/news/health/e-coli-mcdonalds-cases-colorado/73-dc6eae67-4376-4400-a5e1-4e1060bc1c68 More local videos here: https://youtube.com/@9news Subscribe to NEXT: https://youtube.com/@Nexton9NEWS Stay connected: 9NEWS Website: https://www.9news.com/ Facebook: https://www.facebook.com/ilike9news Twitter: https://twitter.com/9NEWS Instagram: https://www.instagram.com/9newsdenver/ Download the 9NEWS App: https://www.9news.com/appredirect/ Sign up for the 9NEWSLETTER: https://www.9news.com/email 9NEWS (KUSA) is located in Denver, Colorado.