21—64.114 (163) Recertification of CWD cervid herds. A herd is certified for 12 months. Annual inventories conducted by state veterinarians are required every 9 to 15 months from the anniversary date. For continuous certification, adherence to the provisions in these rules and all other state laws and rules pertaining to raising cervids is required. A herd’s certification status is immediately terminated and a herd investigation shall be initiated if CWD affected or exposed animals are determined to originate from that herd.