The U.S. Food and Drug Administration (FDA) has announced an outbreak investigation into whole and baby carrots that may have been contaminated with Shiga Toxin-producing E. coli bacteria. The investigation follows a voluntary recall of several brands of carrots issued by Grimmway Farms on Nov.

The carrots, which were sold at supermarket chains nationwide, "should no longer be in grocery stores but may be in consumers' refrigerators or freezers."

If you have organic carrots in your fridge, you need to know about a major E. coli recall that has affected 18 U.S. states, as well as Canada and Puerto Rico.