Brucellosis in Nebraska: State Classification, Testing Requirements, and Legal Obligations
March 16, 2026
Brucellosis is one of the most tightly regulated livestock diseases in the United States, and Nebraska takes its control obligations seriously. If you raise cattle or bison in the Cornhusker State, understanding the legal framework surrounding this disease is not optional — it is a fundamental part of operating a compliant and protected herd.
Nebraska’s brucellosis laws govern everything from how your animals must be vaccinated and tested to what happens when an infected animal is identified on your property. Whether you are moving cattle across state lines, purchasing new stock, or simply maintaining your existing herd, these rules apply to you directly.
This article walks you through Nebraska’s current brucellosis classification status, vaccination and testing requirements, movement regulations, quarantine procedures, and the penalties you face for non-compliance — so you can keep your operation on the right side of the law.
What Is Brucellosis and Why It Is Regulated in Nebraska
Brucellosis is a highly contagious bacterial disease caused by Brucella abortus, primarily affecting cattle and bison. The disease spreads through contact with infected birth tissues, aborted fetuses, or contaminated milk, and it causes significant reproductive losses including spontaneous abortions, stillbirths, and reduced milk production in affected herds.
What makes brucellosis particularly serious is its zoonotic nature — it can be transmitted from animals to humans. People who handle infected livestock or consume unpasteurized dairy products are at risk of contracting undulant fever, a debilitating illness that causes recurring fevers, fatigue, and joint pain. This human health dimension is a key reason why federal and state governments regulate the disease so aggressively.
Key Insight: Brucellosis is a zoonotic disease, meaning it can pass from infected cattle or bison to humans. This is why Nebraska’s regulatory framework extends beyond livestock protection and into public health policy.
Nebraska’s agricultural economy depends heavily on cattle production, making disease control a matter of both economic survival and public safety. The state regulates brucellosis under the Nebraska Bovine Brucellosis Act, which establishes the legal authority for testing, vaccination, quarantine, and eradication programs. For a broader overview of the disease itself, you can read more about brucellosis and its impact on livestock.
Federal oversight comes from the USDA Animal and Plant Health Inspection Service (APHIS), which coordinates with state veterinarians to maintain national eradication standards. Nebraska’s Department of Agriculture operates within this federal framework while enforcing its own state-level statutes and regulations.
Nebraska’s Brucellosis Classification Status
Understanding where Nebraska stands in the national brucellosis eradication program is essential before examining specific rules. The USDA APHIS Brucellosis Eradication Program assigns each state a classification based on the prevalence of the disease within its cattle and bison population.
Nebraska currently holds Class Free status — the highest classification available under the federal program. This designation means that no brucellosis has been detected in the state’s cattle or bison herds within the qualifying period, and the state has maintained an active surveillance and testing program that meets federal standards.
Important Note: Nebraska’s Class Free status is not permanent. It must be actively maintained through ongoing surveillance, testing, and compliance with both state and federal regulations. A single confirmed herd outbreak can trigger a review of the state’s classification.
Maintaining Class Free status carries significant economic benefits for Nebraska producers. Cattle and bison moving from Class Free states face fewer interstate movement restrictions, which reduces costs and simplifies logistics for producers shipping animals to other states or to slaughter facilities. According to USDA APHIS, Class Free states must meet specific herd testing and surveillance requirements to retain their designation.
The practical implication for you as a Nebraska producer is that your compliance with state vaccination, testing, and reporting requirements directly contributes to preserving this status — and by extension, protecting the market access and economic value of your herd.
Vaccination Requirements in Nebraska
Nebraska law requires the vaccination of eligible female cattle against brucellosis as a core component of its disease prevention strategy. The vaccine approved for use is the USDA-licensed Brucella abortus Strain 19 (S19) or RB51 vaccine, with RB51 now being the preferred standard because it does not cause false-positive test results the way S19 occasionally can.
Under Nebraska regulations, calfhood vaccination is the standard requirement. Female calves must be vaccinated between 4 and 12 months of age by an accredited veterinarian. The vaccinating veterinarian is responsible for applying the official USDA vaccination tattoo in the animal’s right ear and completing the required documentation, including the vaccination certificate.
- Vaccination must be performed by a licensed, accredited veterinarian
- Female calves must be vaccinated between 4 and 12 months of age
- The official USDA ear tattoo must be applied at the time of vaccination
- Vaccination records must be maintained and made available for inspection
- Adult vaccination may be authorized under specific circumstances by the State Veterinarian
Pro Tip: Keep all vaccination certificates and veterinary records organized and accessible on your property. Nebraska inspectors and accredited veterinarians may request documentation during routine herd checks or when animals are being prepared for movement or sale.
Bull calves, steers, and animals destined for immediate slaughter are generally exempt from the vaccination requirement. However, if you are purchasing replacement heifers or building your cow herd, verifying vaccination status before purchase is both a legal and practical necessity.
Nebraska participates in the national Bangs vaccination program, which is federally funded and administered through the state. This means that in many cases, vaccination costs may be partially offset through program participation — contact the Nebraska Department of Agriculture for current program availability in your area.
Testing Requirements for Cattle and Bison in Nebraska
Testing is the backbone of Nebraska’s brucellosis surveillance system. The state requires brucellosis testing under several specific circumstances, and the type of test, timing, and required documentation vary depending on the situation.
The primary tests used in Nebraska are the Brucellosis Card Test, the Standard Tube Agglutination Test (STAT), and the Rivanol Precipitation Test. For official purposes, testing must be conducted by an accredited veterinarian or a state or federal animal health official, and samples must be submitted to an approved laboratory.
When Testing Is Required
Nebraska mandates brucellosis testing in the following situations:
- Interstate movement — Female cattle and bison over 6 months of age moving into Nebraska from certain states or moving out of Nebraska to states that require it must have a negative brucellosis test within 30 days prior to movement, depending on the classification status of the originating and receiving states.
- Change of ownership — Sexually intact female cattle and bison over 6 months of age that are sold or transferred within Nebraska may require a negative test depending on their vaccination status and destination.
- Slaughter surveillance — Nebraska participates in the federal slaughter surveillance program, in which samples from adult cattle are tested at slaughter facilities to monitor for the disease at the population level.
- Herd investigation — When a reactor or suspect animal is identified, all sexually intact cattle and bison in the affected herd must be tested as part of the official investigation.
Pro Tip: If you are purchasing cattle at an auction or from a private sale, always request the current health certificate and brucellosis test results before completing the transaction. Buying animals without verified test documentation can expose you to quarantine liability.
Bison are subject to the same general testing requirements as cattle under Nebraska law, with some additional considerations given that wild bison populations in the Greater Yellowstone Area are a known reservoir for the disease. If you raise bison in Nebraska, you should work closely with an accredited veterinarian familiar with bison-specific protocols to ensure full compliance.
Official Test Reactors
An animal that tests positive for brucellosis antibodies is classified as an official reactor. Reactor animals must be identified with an official reactor tag (orange USDA ear tag) and are subject to immediate quarantine. They cannot be moved except to an approved slaughter facility under official permit. Nebraska law requires that reactor animals be slaughtered within a specified timeframe, and indemnity payments may be available through state and federal programs for producers who lose animals to the eradication program.
Interstate and Intrastate Movement Rules in Nebraska
Nebraska’s movement rules for cattle and bison are among the most operationally important regulations you will encounter as a producer. These rules govern both animals entering Nebraska from other states and animals moving within the state, and they are designed to prevent the introduction or spread of brucellosis through livestock commerce.
Interstate Movement Into Nebraska
When you bring cattle or bison into Nebraska from another state, the requirements depend on the brucellosis classification of the state of origin:
- From Class Free states — Sexually intact female cattle and bison over 6 months of age generally do not require a brucellosis test for entry into Nebraska, though a current Certificate of Veterinary Inspection (CVI) is still required.
- From Class A, B, or C states — Animals must have a negative brucellosis test within 30 days prior to movement and must be accompanied by a CVI issued by an accredited veterinarian.
- From Designated Surveillance Areas (DSAs) — Additional testing and permit requirements apply to cattle and bison originating from or transiting through DSAs, which are areas adjacent to known brucellosis reservoirs such as the Greater Yellowstone Area.
You can verify the current classification status of any state through the USDA APHIS brucellosis program page. Classification statuses can change, so checking before each shipment is a sound practice.
Important Note: Cattle or bison imported from a Designated Surveillance Area may require a permit issued by the Nebraska Department of Agriculture in addition to standard testing and CVI requirements. Failure to obtain required permits before movement can result in quarantine of the entire shipment at your expense.
Interstate Movement Out of Nebraska
When you ship cattle or bison from Nebraska to another state, you must comply with the destination state’s import requirements. Because Nebraska holds Class Free status, your animals will generally face fewer testing requirements when entering other Class Free states. However, you are responsible for knowing and meeting the receiving state’s rules — Nebraska’s classification does not automatically satisfy every destination state’s requirements.
Intrastate Movement Within Nebraska
Movement of cattle and bison within Nebraska is also regulated, particularly for sexually intact females changing ownership. Nebraska law may require a negative brucellosis test and official health documentation depending on the vaccination status of the animals and the nature of the transaction. Animals moving directly to slaughter are generally exempt from testing requirements but may still require documentation. If you are moving animals between your own properties without a change of ownership, consult the Nebraska Department of Agriculture to confirm current requirements for your specific situation. You can also review other Nebraska animal regulations to understand the broader regulatory environment for livestock in the state.
Reporting and Quarantine Requirements in Nebraska
Nebraska law imposes strict reporting obligations on producers, veterinarians, and laboratory personnel when brucellosis is suspected or confirmed. Prompt reporting is not a courtesy — it is a legal requirement, and delays can significantly expand the scope of an outbreak and your legal exposure.
Who Must Report and When
The following parties are required to report suspected or confirmed brucellosis cases in Nebraska:
- Accredited veterinarians — Must report any animal that tests positive or is suspected of being infected with brucellosis to the Nebraska State Veterinarian within 24 hours of identification.
- Laboratory personnel — Approved diagnostic laboratories must report positive test results to the State Veterinarian immediately upon confirmation.
- Livestock owners — If you observe clinical signs consistent with brucellosis in your herd — such as a cluster of abortions, retained placentas, or weak newborns — you are legally required to report the situation to the Nebraska Department of Agriculture or your accredited veterinarian promptly.
Common Mistake: Some producers delay reporting suspected cases hoping the situation resolves on its own. This approach can result in broader herd quarantine, loss of Class Free status for the state, and significantly increased personal legal liability. Early reporting almost always results in better outcomes for the producer.
Quarantine Procedures
When a reactor animal is identified in your herd, the Nebraska Department of Agriculture will place the affected premises under an official quarantine order. This quarantine restricts the movement of all cattle and bison on the property until the investigation is complete and the herd is determined to be free of infection or has been depopulated.
Under quarantine, you cannot sell, move, or transfer any cattle or bison without written authorization from the State Veterinarian or a designated federal animal health official. The quarantine remains in effect until all animals have been tested, reactors have been removed, and the herd has passed the required follow-up testing protocol — which typically involves two consecutive negative herd tests conducted at specified intervals.
Nebraska law also requires that aborted fetuses, placental materials, and other potentially contaminated biological materials from a quarantined premises be handled and disposed of according to official instructions to prevent environmental spread of the bacteria. For context on how Nebraska handles other regulated animal situations, see the state’s beekeeping regulations as an example of how the state structures its agricultural compliance frameworks.
Indemnity Payments
Nebraska producers whose animals are destroyed as part of an official brucellosis eradication action may be eligible for indemnity payments through a combination of state and federal funding. The amount is based on the appraised value of the animal at the time of destruction. To qualify, you must have complied with all applicable regulations — producers found to have violated movement or reporting rules are generally disqualified from receiving indemnity.
Penalties for Brucellosis Violations in Nebraska
Nebraska takes enforcement of its brucellosis laws seriously, and the penalties for violations reflect the potential public health and economic consequences of non-compliance. Whether the violation involves falsifying health certificates, moving restricted animals, or failing to report a suspected case, Nebraska law provides a range of enforcement tools.
Civil and Criminal Penalties
Violations of the Nebraska Bovine Brucellosis Act can result in both civil and criminal consequences. Nebraska statutes authorize the following penalties for violations:
- Civil penalties — Nebraska law allows for civil fines for violations of brucellosis regulations. Fines can be assessed per violation and per day that a violation continues, meaning that ongoing non-compliance can accumulate significant financial liability quickly.
- Criminal misdemeanor charges — Willful violations of Nebraska’s brucellosis statutes can be prosecuted as criminal misdemeanors. A conviction can result in fines and, in serious cases, potential jail time depending on the nature and severity of the violation.
- Felony charges — In cases involving deliberate fraud — such as falsifying official health certificates, forging vaccination records, or knowingly moving reactor animals without authorization — Nebraska law may support felony-level charges under broader agricultural fraud statutes.
Important Note: Moving a quarantined animal without official authorization is among the most serious brucellosis violations under Nebraska law. It can result in criminal prosecution, loss of indemnity eligibility, and liability for all costs associated with tracing and testing exposed herds.
Administrative Consequences
Beyond fines and criminal charges, Nebraska producers who violate brucellosis regulations may face significant administrative consequences:
- Denial or revocation of livestock dealer or auction market licenses
- Mandatory participation in compliance training programs
- Enhanced surveillance requirements for the affected herd going forward
- Ineligibility for state and federal indemnity programs
- Potential loss of market access if the state’s Class Free status is jeopardized by the violation
Accredited veterinarians who falsify health certificates or fail to meet their reporting obligations face additional professional consequences, including suspension or revocation of their USDA accreditation and state veterinary license.
Enforcement Authority
The Nebraska Department of Agriculture, in coordination with USDA APHIS, has broad authority to investigate suspected violations, inspect premises and records, and pursue enforcement actions. State animal health officials can enter your property to conduct inspections, collect samples, and review documentation when there is reasonable cause to believe a violation has occurred or when a reported case is under investigation.
Pro Tip: The most effective way to avoid penalties is to build compliance into your routine herd management practices. Work with a licensed, accredited veterinarian to establish a vaccination and testing schedule, maintain thorough records, and stay current with any regulatory updates from the Nebraska Department of Agriculture. Proactive compliance is always less costly than reactive enforcement response.
If you own or manage other types of animals in Nebraska, it is worth familiarizing yourself with the broader regulatory landscape. Nebraska maintains active oversight across multiple animal categories, and understanding how regulations interact can help you manage your operation more effectively. You can explore related topics such as exotic pet laws in the United States for additional context on how animal ownership is regulated at both the state and federal levels.
Brucellosis compliance in Nebraska is not a one-time task — it is an ongoing responsibility that requires attention to vaccination schedules, testing timelines, movement documentation, and reporting obligations. Staying informed and working closely with your accredited veterinarian and the Nebraska Department of Agriculture is the most reliable path to protecting your herd, your operation, and Nebraska’s hard-earned Class Free status.