[Code of Federal Regulations] [Title 9, Volume 2] [Revised as of January 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 9CFR311.33] [Page 141] TITLE 9--ANIMALS AND ANIMAL PRODUCTS CHAPTER III--FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE PART 311_DISPOSAL OF DISEASED OR OTHERWISE ADULTERATED CARCASSES AND PARTS--Table of Contents Sec. 311.33 Listeriosis. Carcasses of livestock identified as U.S. Suspects because of a history of listeriosis shall be passed for human food after condemnation of the head if the carcass is otherwise normal.