Bovine Tuberculosis Testing Requirements in West Virginia: Rules Every Cattle Owner Must Follow
August 31, 2026
If you raise cattle, bison, goats, or cervids in West Virginia, you operate under a layered set of federal and state rules designed to keep bovine tuberculosis out of the state’s livestock population. These requirements affect how you test animals before a sale, what paperwork you need before crossing a state line, and what happens if a test comes back suspect. Understanding bovine tuberculosis testing requirements in West Virginia before you buy, sell, or exhibit an animal can save you from a rejected shipment, an unexpected quarantine, or a costly retest.
This breakdown covers what the disease is, how West Virginia is classified under the national eradication program, who has to test which animals, and what enforcement looks like when something goes wrong.
What Is Bovine Tuberculosis and Why It Is Regulated in West Virginia
Bovine tuberculosis (TB) is a contagious, infectious, communicable disease of animals and humans caused by Mycobacterium bovis, written formally as Mycobacterium bovis. It is commonly a chronic, debilitating disease but occasionally may assume an acute, rapidly progressive course, and it is a widespread zoonosis of global magnitude affecting nearly all species of vertebrates. The disease spreads by direct contact, inhalation of droplets expelled from infected lungs, and ingestion of contaminated feed or milk.
Cattle rarely show outward signs. Infected cattle are typically asymptomatic, and if cattle or bison show clinical signs of tuberculosis, the disease has advanced to affect multiple organ systems, which is rare. That’s precisely why testing, not observation, drives the entire regulatory system. The prevalence of tuberculosis in cattle, bison, and captive cervids is extremely low in the United States, with an estimated prevalence of 7 per 1 million cattle screened, but the low case count doesn’t reduce the stakes for an individual herd. APHIS and State animal health agencies collaborate with U.S. livestock producers to administer the National Tuberculosis Eradication Program, which has nearly eradicated tuberculosis from the Nation’s livestock population since its inception in 1917. West Virginia participates in this cooperative structure directly. The county court of any county is authorized to cooperate with the commissioner of agriculture and the United States Department of Agriculture in the control and eradication of bovine tuberculosis and in creating modified accredited free areas, with expenses paid out of the county treasury.
Key Insight: Bovine TB is a reportable, zoonotic disease. A single confirmed case can trigger herd quarantine, mandatory retesting, and scrutiny of every animal that moved through that premises in the prior year.
West Virginia’s TB Classification Status and Risk Zones
West Virginia currently holds the highest classification available under the federal program. West Virginia appears on the list of accredited-free States under 9 CFR 77.7, alongside states such as Kentucky, Ohio, Pennsylvania, and Virginia. That status matters for anyone shipping cattle across state lines, because cattle or bison that originate in an accredited-free State or zone may be moved interstate in accordance with 9 CFR part 86 without further restriction under this part.
Accredited-free status isn’t permanent by default. It has to be renewed and can be lost. Accredited-free State or zone status must be renewed annually, and to qualify for renewal, a State must submit an annual report to APHIS certifying that the State or zone complies with the “Uniform Methods and Rules—Bovine Tuberculosis Eradication.” A single detection doesn’t automatically strip the state of its status. If an affected herd is detected in a State or zone classified as accredited-free, and the herd is depopulated and an epidemiologic investigation is completed within 90 days of detection with no evidence of spread, the State or zone may retain its accredited-free status. The threshold for demotion is higher than one incident: if two or more affected herds are detected in an accredited-free State or zone within a 48-month period, the State or zone will be removed from the list of accredited-free States or zones and will be reclassified as modified accredited advanced.
West Virginia has no designated TB management zones carved out within its borders. The federal regulation lists modified accredited zones as “None” for the state, unlike Michigan, which has a specific county-level zone tied to endemic infection in wild deer. That’s a meaningful distinction for hunters and landowners who follow hunting license requirements in West Virginia, since the state doesn’t currently carry the wildlife surveillance burden that comes with an active deer TB zone.
| Classification | Movement Restriction | West Virginia Status |
|---|---|---|
| Accredited-free | None for interstate movement | Current status |
| Modified accredited advanced | Herd test intervals of 9-15 months in some cases | Applies only if reclassified |
| Modified accredited | Individual and herd testing required more frequently | Not applicable |
Who Must Test and Which Animals Are Covered in West Virginia
The commissioner of agriculture holds broad authority to test cattle statewide. The commissioner or the commissioner’s agent is authorized to test with tuberculin any bovine animal kept within the state, subject to rules prescribed by the commissioner. Certain classes of cattle face a standing testing expectation regardless of movement plans: the tuberculin test shall be applied to bovine animals at times designated by the commissioner for the control and eradication of bovine tuberculosis, and all cows whose milk is sold for human consumption or manufacture, and all uncastrated beef animals, shall be tested with tuberculin to the greatest extent possible.
TB testing obligations extend well beyond dairy cattle. Bison fall under the same federal framework as cattle. Goats face their own import-specific rule: the Commissioner may prohibit any person from importing a goat into the state for breeding or milking purposes unless the animal has a valid CVI showing a negative tuberculosis test within 2 months prior to entry, or the animal has been maintained in a USDA Accredited Tuberculosis Free Herd. If you keep goats alongside cattle, it’s worth reviewing goat ownership laws in West Virginia for the full picture of what state agriculture officials expect from small ruminant owners.
Cervids (deer, elk, and related species held in captivity) face the strictest entry standard of any species. Prior approval must be obtained from the West Virginia Department of Agriculture before any cervid may be imported, and the import permit must be in place before transportation into the state is allowed.
Pro Tip: Before you buy or sell across state lines, confirm which category your animal falls into. Cattle, bison, goats, and cervids each carry different testing windows, and using the wrong timeline is one of the most common reasons a Certificate of Veterinary Inspection gets rejected at the border.
Approved TB Testing Methods in West Virginia
The standard field screening test is the caudal fold test. In the field, the screening test is a tuberculin skin test, typically a caudal tail fold skin test in cattle, overseen and read by an accredited veterinarian, with 0.1 ml of tuberculin injected intradermally. Animals sensitized to the bacteria develop a delayed hypersensitive reaction or swelling, and the accredited veterinarian checks tested animals in 72 plus or minus 6 hours, reporting all significant swellings as a suspect.
Results get recorded using a standard federal form. Veterinarians use VS Form 6-22, entering “N” (negative) when no change appears at the injection site, and “S” (suspect) when they observe or palpate any increase in caudal fold thickness, size, or sensitivity at the injection site. A suspect result doesn’t confirm infection on its own. The caudal-fold test is used as a presumptive diagnostic procedure, and animals classified as suspect must be evaluated further by the comparative cervical (CC) test, gamma interferon test, or sent directly to slaughter under permit.
Follow-up testing carries strict timing rules and requires specialized credentials. Only Federal or State regulatory veterinarians who have had specialized training may conduct the follow-up testing. Follow-up CCT testing must be performed within 10 days of the initial caudal-fold injection in cattle and bison, or the herd owner must wait 60 days (90 days for cervidae) after the injection of the CFT before a follow-up CCT can be applied.
For import purposes, West Virginia also accepts an alternative to the traditional herd test protocol. The complete herd test for tuberculosis shall use the single cervical test as prescribed by the United States Department of Agriculture on December 31, 1990, or an equivalent approved test (DPP Test, Dual Path Platform Test, April 2014), approved by USDA APHIS Veterinary Services.
| Test | Purpose | Who Performs It |
|---|---|---|
| Caudal Fold Test (CFT) | Initial screening | Accredited veterinarian |
| Comparative Cervical (CC) Test | Confirmatory, for suspects | Trained regulatory veterinarian |
| Gamma Interferon Test | Confirmatory, blood-based | Regulatory laboratory |
| DPP Test | Approved herd-test alternative | Accredited veterinarian |
Interstate and Intrastate Movement Testing Requirements in West Virginia
Every animal crossing into the state needs paperwork first. A valid CVI (Certificate of Veterinary Inspection, i.e. health certificate) is required for all animals being imported into West Virginia, and CVIs expire after 30 days of issuance. Because West Virginia and most surrounding states share accredited-free status, cattle moving between them typically avoid extra testing burden: cattle from USDA-classified free states for either tuberculosis or brucellosis do not require additional TB testing on import.
That exemption disappears once a herd’s history includes a quarantine. A person shall not import any bovine into the state from a herd that has been under quarantine for tuberculosis during the 12 months previous to importation unless that animal has had a negative tuberculosis test no more than 2 months prior to importation. Breeding and dairy cattle have a narrower path to skip individual testing: the Commissioner may allow any bison or bovine animal imported for breeding purposes or for use in a dairy herd to enter without a tuberculosis test on the animal when that animal comes from a herd that has been completely tested for tuberculosis and found to contain no reactors.
Cervid imports remain the most document-heavy category. Cervids must come from a herd that has had no tuberculosis reactors found during a complete herd test on all animals 6 months of age and older within the 12 months prior to importation, and the individual animal must have had a negative tuberculosis test within 2 months prior to importation, plus a negative brucellosis test within 1 month.
If an animal has been exposed to TB or brucellosis and still needs to enter the state, a special permit path exists, but it comes with a long quarantine tail. The special permit that the commissioner issues for an animal exposed to brucellosis or tuberculosis requires that the animal be quarantined for not less than ninety (90) days after importation and retested after that time at the owner’s expense to determine that the animal is not infected with, or a reactor to, brucellosis or tuberculosis.
Within the state, testing pressure drops considerably once an animal is already established in a West Virginia herd. As one Mid-Atlantic extension summary puts it, in disease-free states, testing usually only occurs for sales or shows that cross state borders. That said, exhibitors should double-check documentation rules before entering a fair. WV Title 61 requires that breeding sheep and goats being exhibited in West Virginia must either obtain a certificate of veterinary inspection or have an Honor Herd or Honor Flock certificate. For the most current species-by-species entry rules, the West Virginia Department of Agriculture’s import requirements document is the primary reference producers should check before every shipment.
What Happens When a Suspect or Positive Result Occurs in West Virginia
Reporting is immediate and non-negotiable. All accredited veterinarians must immediately report every suspected or diagnosed bovine TB case promptly to both the Assistant District Director and the State Animal Health Official. If the test produces any type of response, the veterinarian must immediately notify APHIS Veterinary Services Area Offices and State animal health officials.
A suspect classification triggers a herd-level hold, not just an individual one. Herds containing suspects to the CFT test shall be quarantined until the suspect animals are resolved through confirmatory testing. Once an animal is confirmed as a reactor, identification and movement rules kick in fast. Reactor cattle and bison shall be identified by branding the letter “T” on the left hip near the tailhead, not less than 2 inches and not more than 3 inches high, and by tagging with an approved metal eartag bearing a serial number and inscription “U.S. Reactor” or a similar State reactor tag attached to the left ear of each animal. West Virginia’s own statute uses similar language for the branding requirement on infected animals disclosed within the state, marking them on the left jaw with a capital “T” not less than two inches high, one and one-half inches wide, with a mark one fourth of an inch wide.
Time is tight once an animal is classified as a reactor. Reactors shall remain on the premises where they were disclosed until a State or Federal permit for movement has been obtained, and movement for immediate slaughter shall be within 15 days of classification, directly to a slaughtering establishment where approved State or Federal inspection is maintained.
Important Note: A “suspect” reading on a caudal fold test is common and does not automatically mean an animal has bovine TB. False-positive-style responses to the screening test occur; confirmatory testing exists specifically to rule those cases out before any animal is condemned.
Quarantine and Herd Depopulation Rules in West Virginia
West Virginia law is direct about the outcome for confirmed cases. All bovine animals within the state that are deemed to have tuberculosis, either as a result of a physical examination or the tuberculin test, shall be euthanized, and if the owner demands indemnity, the owner shall execute the required agreement, have the animal appraised, and receive an appraisal certificate before euthanasia proceeds.
Disposal isn’t left to the owner’s discretion. Federal guidance under the Uniform Methods and Rules calls for euthanized reactors to be destroyed on the premises or in a postmortem examination facility under direct supervision of a State or Federal animal health veterinarian, with carcasses disposed of by deep burial or burning, and facilities adequately cleaned and disinfected.
Rebuilding a herd after depopulation follows a defined testing calendar rather than a simple restocking. In a newly assembled herd on premises where a tuberculosis-affected herd has been depopulated, two negative annual herd tests shall be applied to all cattle, bison, and other livestock, with the first test applied approximately 6 months after assembly of the new herd.
- Detection: Suspect or reactor identified through CFT or slaughter surveillance.
- Quarantine: Herd movement restricted while confirmatory testing proceeds.
- Disposition: Confirmed reactors euthanized or shipped directly to slaughter under permit within 15 days.
- Cleanup: Premises disinfected; carcasses buried or burned under veterinary supervision.
- Reassembly testing: New herd tested at roughly 6 months, then again a year later.
Penalties for Non-Compliance in West Virginia
West Virginia treats bovine tuberculosis as one of dozens of statutorily recognized communicable livestock diseases. West Virginia Code Article 19-9 defines “communicable disease” to include tuberculosis alongside brucellosis, anthrax, rabies, and a long list of other reportable conditions in livestock. That designation gives the commissioner enforcement tools that go beyond a simple fine, including the authority to order testing, quarantine, and euthanasia described in earlier sections.
Paperwork violations carry their own reporting obligation. Every sale in the state of a biological product intended for diagnostic or therapeutic purposes with animals, and each injection or test made with it, shall be reported in writing to the commissioner within one week after the sale or test, signed by the person who made the sale or test. Skipping that report, or moving an animal without a valid CVI, exposes the owner and any accredited veterinarian involved to state enforcement action, since import rules are built around mandatory certification rather than optional best practice.
Import violations carry immediate practical consequences even before any court action. The Commissioner may prohibit any person from importing a bovine into the state for breeding or milking purposes from any state designated “Free” or “Class A” unless specific brucellosis-related conditions are met, and the same enforcement logic applies to TB documentation. An animal arriving without a valid CVI, without required test results listed on that certificate, or from a quarantined herd without the mandated retest can be turned back, held, or placed under the same 90-day special-permit quarantine described earlier.
Common Mistake: Assuming a CVI from the state of origin automatically satisfies West Virginia’s requirements. The certificate must list the correct test dates and results for the specific species involved; an expired or incomplete CVI is treated the same as having no certificate at all.
Because enforcement details can change and individual circumstances vary by species and herd history, contact the West Virginia Department of Agriculture’s Animal Health Division directly before moving cattle, goats, bison, or cervids across state lines. The Animal Diseases division page also maintains current species-specific testing and accreditation resources, including Tuberculosis Accreditation and Secure Milk Supply program details, that supplement the statutory requirements covered here.
Staying compliant ultimately comes down to three habits: confirm your animal’s classification before you test, use only the testing methods and timelines listed on the current USDA APHIS tuberculosis reference guide, and keep every CVI and herd test record on file well past the 30-day certificate window. Producers who also raise other livestock or manage land for hunting should review related state requirements, including rabies vaccine requirements in West Virginia, since animal health compliance in the state rarely stops at a single disease program.