Health

Nearly 650 people got sick after eating at Chipotle. Here's what we know about the culprit, and how to avoid it.

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  • Nearly 650 people got sick after eating at a Chipotle in Powell, Ohio. Now we know why. 
  • The Delaware General Health District said stool samples of sick people tested positive for the bacteria Clostridium perfringens.
  • C. perfringens is pretty easily avoided, if food is kept at appropriate storage temperatures.

The mystery's largely been solved at a Chipotle restaurant in Powell, Ohio.

Nearly 650 people got violently ill with severe stomach cramps and diarrhea after eating there, as Business Insider reported earlier.

The outbreak started around July 26, and continued for several days, but health officials were initially not sure what happened. After testing some stool samples of the sickened customers, they've found a culprit: a bacteria called Clostridium perfringens was at work. 

Like E. coli, C. perfringens hangs out naturally in the guts of animals and people, and is often in raw meat.

The US Centers for Disease Control and Prevention says it is one of the most common types of food poisoning. It  sickens nearly a million people in the country every year with diarrhea and cramps that usually last for less than a day. 

Problems can arise with C. perfringens when food is kept warm for a while before it's served.

The trouble is easily avoided if workers are trained to keep food at safe storage and serving temperatures. For example, roasts of beef and poultry should be stored above 140 degrees Fahrenheit, or below 40 degrees, the CDC says. Meat should be served up hot, not lukewarm.

In response to the outbreak, Chipotle CEO Brian Niccol said the company's going to work on that. 

"Chipotle Field Leadership will be retraining all restaurant employees nationwide beginning next week on food safety and wellness protocols," Chipotle CEO Brian Niccol said in response to the outbreak news.

See also: Health officials reveal why nearly 650 people got sick after eating at Chipotle

This isn't the first time Chipotle's come under fire for questionable food handling practices. The company was plagued by a string of food poisoning outbreaks in 2015, and has continued to have issues since. More recently, the company closed down a Virginia store in 2017 after several people got sick there. At the time, food safety advocate and attorney Bill Marler told Business Insider that Chipotle may not actually be any worse at food safety than other restaurants; it's just the one company that gets caught.

"The vast majority of foodborne illnesses are never linked to anything," Marler said. "Most people think the thing that made them sick was the last thing they ate — which is mostly wrong."

The best way to treat C. perfringens is with lots of fluids and rest. The more surefire way to prevent this nuisance illness is by making sure your food's been properly cooked, stored, and handled before you put it in your mouth. 

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Hilary Brueck
Hilary Brueck is a Health Correspondent at Business Insider, where she covers longevity and the quest to improve human aging. She also writes regularly about the complexities of diagnosing and treating cancer, the evolving landscape of GLP-1 drugs, new developments in exercise science, and expert-backed nutrition adviceIn general, she relishes any opportunity to unpack scientific discoveries or examine the latest consumer trends. Her reports have ranged from exploring how sherpas effortlessly climb into the thin air 29,029 feet above sea level to summit Mount Everest, to trudging along a Jersey shore beach with scientists fighting killer pandemic flu viruses by studying bird butts.She spoke with Dr. Anthony Fauci about his vitamin and supplement routine over a cold slice of pizza, and chatted with the world's oldest Nobel Prize winner in his basement solar lab. She also went an entire month without eating any ultra-processed foods (yes, it was time-consuming and challenging). A graduate of Columbia Journalism School and former Peace Corps Volunteer, Hilary speaks English, French, and Malagasy. Previously, Hilary reported for ABC News Radio, Fortune, Forbes, and Al Jazeera America. In her spare time, she likes to run, hike and she is also an aspiring (but very bad) surfer. If you've got a pressing health question, tip, or concern, reach out to hbrueck@bjinnox.com