- McDonald’s stock sinks after CDC reports E. coli outbreak linked to Quarter PounderYahoo Finance
- E. coli Outbreak Linked to McDonald’s Quarter PoundersCDC
- Where is the Quarter Pounder being removed? McDonald’s locations in 12 states impacted amid E. coli outbreakUSA TODAY
- Costco could add 4 million members from crackdown akin to Netflix, says Morgan StanleyCNBC
- How McDonald’s can learn from other fast-food giants in recovering from the deadly E. coli outbreakBusiness Insider