Story highlights The discovery shows enhanced testing procedures are working, Blue Bell says

It emphasizes it has found no confirmed cases of listeria

Blue Bell recalled all products nationwide last year after a fatal listeria outbreak

(CNN) Blue Bell Creameries, which is recovering from a nationwide recall prompted by a fatal listeria outbreak, says enhanced testing of its facilities has found locations where suspected listeria may be present.

The ice cream company said the new discoveries show its testing procedures are working, and it is now extensively cleaning and sanitizing the suspect areas.

Blue Bell emphasized that it has found no confirmed cases of listeria

Correction A previous version of this story incorrectly characterized the contents of a Blue Bell statement on its product-safety efforts. The Blue Bell statement, reflected in this updated story, refers only to the company having "... identified locations where suspected Listeria species may be present ... " and says that the company "... continues to extensively clean and sanitize those areas ... "

"The entire purpose of our enhanced environmental testing is to identify locations where bacteria could be found in our facility in order to properly clean and sanitize the surface and prevent contamination," Blue Bell said in a statement Friday.

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