Days after the FDA issued a do-not-eat warning about imported shrimp sold at Walmart, a Florida company actually issued a recall of that shrimp and a California company recalled shrimp sold under five other brands.

The FDA has expanded its recall of frozen shrimp over potential radioactive contamination, now affecting more U.S. states.

Southwind Foods said it is "voluntarily recalling a limited quantity of frozen shrimp" due to the possible contamination with Cesium-137, a radioactive isotope.