Earlier this week, HuffPost Food wrote that Food Safety News had been investigating an unusually large outbreak of salmonella originating at an unnamed Mexican chain with locations throughout middle America. FSN did a bunch of legwork to try and dig up the identity of the restaurant -- and today, their work finally paid off.

The culprit was Taco Bell.

The Yum Brands chain had looked like the most likely culprit for some time; of the four chains with locations in all or almost all of the affected states, it had by far the most outposts. And it has a history of salmonella.

• Yum! Brands, Inc. (YUM) Earns $0.76, Raises Guidance 12%
  

  Yum! Brands, Inc. (YUM) Earns $0.76, Raises Guidance 12%

  After the close on Wednesday, Yum! Brands, Inc. ( NYSE:YUM ) reported earnings. The report...

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• I Plan to Buy Yum! Brands' Shares Next Month
  I Plan to Buy Yum! Brands' Shares Next Month

  As stated in this article , I already had one share of Visa (ticker: V ) and I plan to increase my portfolio value. After doing some research and implementing Ben Graham's theory, I decided to buy...

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• Video: Tierney Likes Yum! Brands, Apple
  

  Video: Tierney Likes Yum! Brands, Apple

  April 20 (Bloomberg) -- James Tierney, chief investment officer at W.P. Stewart Securities Ltd...

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• YUM's Recipe for Success
  YUM's Recipe for Success

  Discussing the untold story of Yum! Brands, with Tim Seymour, Seygem Asset Management. And Ron Shah, Jina Ventures, weighs in on Yum Brands' push into India. < Prev...

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• Yum Brands First Quarter Net Income Skyrockets 73%
  Yum Brands First Quarter Net Income Skyrockets 73%

  LOUISVILLE, Ky. -- Yum Brands Inc., owner of the Pizza Hut, Taco Bell and KFC chains, said Wednesday its first-quarter net income rose 73 percent based on a successful combo – continuing strong...

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