§ 55.1 Definitions. *Accredited veterinarian.* A veterinarian approved by the Administrator in accordance with part 161 of this chapter to perform functions specified in subchapters B, C, and D of this chapter.
*Administrator.* The Administrator, Animal and Plant Health Inspection Service, or any person authorized to act for the Administrator.
*Animal.* Any farmed or captive deer, elk, or moose.
*Animal identification.* A device or means of animal identification approved for use under this part by APHIS. Examples of animal identification devices that APHIS has approved are listed in § 55.25.
*Animal identification number (AIN).* A numbering system for the official identification of individual animals in the United States. The AIN contains 15 digits, with the first 3 being the country code (840 for the United States), the alpha characters USA, or the numeric code assigned to the manufacturer of the identification device by the International Committee on Animal Recording.
*Animal and Plant Health Inspection Service* (APHIS). The Animal and Plant Health Inspection Service of the United States Department of Agriculture.
*APHIS employee.* Any individual employed by the Animal and Plant Health Inspection Service who is authorized by the Administrator to do any work or perform any duty in connection with the control and eradication of disease.
*Approved State CWD Herd Certification Program.* A program operated by a State government for certification of cervid herds with respect to CWD that the Administrator has determined to meet the requirements of § 55.23(a).
*Cervid.* All members of the family Cervidae and hybrids, including deer, elk, moose, caribou, reindeer, and related species. For the purposes of this part, the term “cervid” refers specifically to cervids susceptible to CWD. These are animals in the genera Odocoileus, Cervus, and Alces and their hybrids, *i.e.*, deer, elk, and moose.
*Commingled, commingling.* Animals are commingled if they have direct contact with each other, have less than 10 feet of physical separation, or share equipment, pasture, or water sources/watershed. Animals are considered to have commingled if they have had such contact with a positive animal or contaminated premises within the last 5 years.
*CWD-exposed animal.* An animal that is part of a CWD-positive herd, or that has been exposed to a CWD-positive animal or contaminated premises within the previous 5 years.
*CWD-exposed herd.* A herd in which a CWD-positive animal has resided within 5 years prior to that animal's diagnosis as CWD-positive, as determined by an APHIS employee or State representative.
*CWD Herd Certification Program.* The Chronic Wasting Disease Herd Certification Program established by this part. This program includes both herds that are directly enrolled in the CWD Herd Certification Program and herds that are included based on their participation in Approved State CWD Herd Certification Programs.
*CWD-positive animal.* An animal that has had a diagnosis of CWD established through official confirmatory testing conducted by the National Veterinary Services Laboratories.
*CWD positive herd.* A herd in which a CWD positive animal resided at the time it was diagnosed and which has not been released from quarantine.
*CWD-source herd.* A herd that is identified through testing, tracebacks, and/or epidemiological evaluations to be the source of CWD-positive animals identified in other herds.
*CWD-suspect animal.* An animal for which an APHIS employee or State representative has determined that unofficial CWD test results, laboratory evidence or clinical signs suggest a diagnosis of CWD, but for which official laboratory results have been inconclusive or not yet conducted.
*CWD-suspect herd.* A herd for which unofficial CWD test results, laboratory evidence, or clinical signs suggest a diagnosis of CWD, as determined by an APHIS employee or State representative, but for which official laboratory results have been inconclusive or not yet conducted.
*Deer, elk, and moose.* All animals in the genera Odocoileus, Cervus, and Alces and their hybrids.
*Department.* The United States Department of Agriculture.
*Farmed or captive.* Privately or publicly maintained or held for economic or other purposes within a perimeter fence or confined area, or captured from a free-ranging population for interstate movement and release.
*Herd.* One or more animals that are: ( 1 ) Under common ownership or supervision and are grouped on one or more parts of any single premises (lot, farm, or ranch) or
( 2 ) All animals under common ownership or supervision on two or more premises which are geographically separated but on which animals have been interchanged or had direct or indirect contact with one another.
*Herd plan.* A written herd and/or premises management agreement developed by APHIS in collaboration with the herd owner, State representatives, and other affected parties. The herd plan will not be valid until it has been reviewed and signed by the Administrator, the State representative, and the herd owner. A herd plan sets out the steps to be taken to control the spread of CWD from a CWD-positive herd, to control the risk of CWD in a CWD-exposed or CWD-suspect herd, or to prevent introduction of CWD into that herd or any other herd. A herd plan will require specified means of identification for each animal in the herd; regular examination of animals in the herd by a veterinarian for clinical signs of disease; reporting to a State or APHIS representative of any clinical signs of a central nervous system disease or chronic wasting condition in the herd; maintaining records of the acquisition and disposition of all animals entering or leaving the herd, including the date of acquisition or removal, name and address of the person from whom the animal was acquired or to whom it was disposed; and the cause of death, if the animal died while in the herd. A herd plan may also contain additional requirements to prevent or control the possible spread of CWD, depending on the particular circumstances of the herd and its premises, including but not limited to depopulation of the herd, specifying the time for which a premises must not contain cervids after CWD-positive, -exposed, or -suspect animals are removed from the premises; fencing requirements; selective culling of animals; restrictions on sharing and movement of possibly contaminated livestock equipment; premises cleaning and disinfection requirements; or other requirements. A herd plan may be reviewed and changes to it suggested at any time by any party signatory to it, in response to changes in the situation of the herd or premises or improvements in understanding of the nature of CWD epidemiology or techniques to prevent its spread. The revised herd plan will become effective after it is reviewed by the Administrator and signed by the Administrator, the State representative, and the herd owner.
*Herd status.* The status of a herd assigned under the CWD Herd Certification Program in accordance with § 55.24, indicating a herd's relative risk for CWD. Herd status is based on the number of years of monitoring without evidence of the disease and any specific determinations that the herd has contained or has been exposed to a CWD-positive, -exposed or -suspect animal.
*Materials.* Parts of barns or other structures, straw, hay, and other feed for animals, farm products or equipment, clothing, and any other articles on the premises that have been in contact with captive cervids.
*Mortgage.* Any mortgage, lien, or other security or beneficial interest held by any person other than the one claiming indemnity.
*National Uniform Eartagging System.* A numbering system for the official identification of individual animals in the United States providing a nationally unique identification number for each animal. The National Uniform Eartagging System employs an eight- or nine-character alphanumeric format, consisting of a two-number State or territory code, followed by two or three letters and four additional numbers. Official APHIS disease control programs may specify which format to employ.
*Official animal identification.* A device or means of animal identification approved for use under this part by APHIS to uniquely identify individual animals. Examples of approved official animal identification devices are listed in § 55.25. The official animal identification must include a nationally unique animal identification number that adheres to one of the following numbering systems: ( 1 ) National Uniform Eartagging System. The CWD program allows the use of either the eight-character or nine-character format for cervids.
( 2 ) Animal identification number (AIN).
( 3 ) Premises-based number system. The premises-based number system combines an official premises identification number (PIN), as defined in this section, with a producer's livestock production numbering system to provide a unique identification number. The PIN and the production number must both appear on the official tag.
( 4 ) Any other numbering system approved by the Administrator for the identification of animals in commerce.
*Official appraiser (APHIS official appraiser, State official appraiser).* A person authorized by APHIS (an APHIS official appraiser) or a State (a State official appraiser) to appraise animals for the purposes of this part. An official appraiser may be an APHIS employee, a State employee, or a professional livestock appraiser working under contract to APHIS or a State.
*Official CWD test.* Any test for the diagnosis of CWD approved by the Administrator and conducted in a laboratory approved by the Administrator in accordance with § 55.8 of this part.
*Person.* Any individual, corporation, company, association, firm, partnership, society, joint stock company, or other legal entity.
*Premises identification number (PIN).* A nationally unique number assigned by a State, Tribal, and/or Federal animal health authority to a premises that is, in the judgment of the State, Tribal, and/or Federal animal health authority, a geographically distinct location from other premises. The premises identification number is associated with an address, geospatial coordinates, and/or location descriptors which provide a verifiably unique location. The premises identification number may be used in conjunction with a producer's own livestock production numbering system to provide a unique identification number for an animal. It may also be used as a component of a group/lot identification number. The premises identification number may consist of: ( 1 ) The State's two-letter postal abbreviation followed by the premises' assigned number; or
( 2 ) A seven-character alphanumeric code, with the right-most character being a check digit. The check digit number is based upon the ISO 7064 Mod 36/37 check digit algorithm.
*Secretary.* The Secretary of Agriculture of the United States, or any officer or employee of the Department delegated to act in the Secretary's stead.
*State.* Each of the States of the United States, the District of Columbia, Puerto Rico, the Northern Mariana Islands, Guam, the Virgin Islands of the United States, or any other territory or possession of the United States.
*State representative.* A person regularly employed in the animal health work of a State and who is authorized by that State to perform the function involved.
*Trace back herd.* A herd in which a CWD-positive animal formerly resided.
*Trace forward herd.* A herd that has received exposed animals from a CWD-positive herd within 5 years prior to the diagnosis of CWD in the positive herd or from the identified date of entry of CWD into the positive herd.
*Veterinarian in charge.* The veterinary official of Veterinary Services, APHIS, who is assigned by the Administrator to supervise and perform official animal health work for APHIS in the State concerned.
[67 FR 5931, Feb. 8, 2002, as amended at 71 FR 41701, July 21, 2006; 77 FR 35565, June 13, 2012; 79 FR 23891, Apr. 29, 2014]