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3 trends gaining ground in November

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Health authorities say an investigation of the situation is continuing.

The Bottom Line: Overexpansion, marketing problems and intense competition have hurt the chain's sales. But it can recover.

When the happy talk is all about taxes, you know this was a good spell for restaurants. Also on the plus side: a cover-up for breastaurants, a lovefest for the big burger chains and bitcoins make an inroad.

In a shot to its competitors, Panera petitions the government to improve food transparency around eggs.