See also: 1993 E. coli outbreak
Health inspectors traced the contamination to the Monster Burger, which in January 1993 had been on a special promotion (using the slogan So good it's scary!) and sold at a discounted price. The ensuing high demand "overwhelmed" the restaurants and the product was not cooked for long enough or at a high enough temperature to kill the bacteria. Subsequent investigation by the Centers for Disease Control and Prevention (CDC) identified five slaughterhouses in the United States and one in Canada as "the likely sources of [...] the contaminated lots of meat."
- While the Monster Burger was discontinued, the Monster Taco retains the "Monster" branding.
- Jack in the Box rival Hardee's launched a product with the same name in 1997. It became the "Monster Thickburger" in 2004.
- Drexler, Madeline (23 December 2009). Secret Agents: The Menace of Emerging Infections (Revised ed.). New York, NY: Penguin Books. ISBN 9780143117179.
- Manning, Shannon D. (1 April 2010). Escherichia Coli Infections (2nd ed.). New York, NY: Chelsea House Publishers. ISBN 9781604132533.
- Green, Emily (6 June 2001). "The Bug That Ate The Burger". Los Angeles Times (Los Angeles). Retrieved 7 July 2013.
- Davis, M. (16 April 1993). "Update: Multistate Outbreak of Escherichia coli O157:H7 Infections from Hamburgers - Western United States, 1992-1993". Morbidity and Mortality Weekly Report (MMWR) (Atlanta, GA: Centers for Disease Control and Prevention) 42 (14).
- Young, Lisa R. (December 26, 2006). The Portion Teller Plan: The No-Diet Reality Guide to Eating, Cheating, and Losing Weight Permanently. Random House. ISBN 0767920791.
- Hardee's unveils new 'Monster'. CNNMoney. November 15, 2004.