The Vikings listed all three body parts on the injury report Wednesday, when Peterson was held out of practice, presumably as a precaution. The hip and ankle problems were new this week.
Peterson became ill last Saturday, the day before the Vikings beat Detroit, but he's past that now. He said on a conference call with Chicago reporters Wednesday the sickness to his stomach was the result of eating shrimp. He's allergic to shellfish.
The Vikings play at Chicago on Sunday.
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