# Brucellosis in Cattle; Research Facilities
> **Animal and Plant Health Inspection Service** · Final rule. · Published 2008-02-26 · Effective 2008-03-27 · 73 FR 10137
## Document
- **Document number:** E8-3591
- **Category:** other
- **Sub-agency:** Animal and Plant Health Inspection Service
- **Federal Register citation:** 73 FR 10137
- **CFR reference:** 9 CFR 78
- **Publication date:** 2008-02-26
- **Effective date:** 2008-03-27
- **USDA docket:** Docket No. APHIS-2006-0183
## Abstract

We are amending brucellosis regulations by providing an exception in the definition of herd for animals held within a federally approved brucellosis research facility, in order to facilitate research on brucellosis-exposed or infected animals in those facilities. Prior to this rule, such animals constituted a herd, and the presence of brucellosis-positive herds within a State can adversely affect that State's brucellosis classification. By providing an exception for brucellosis-exposed or infected animals held within federally approved research facilities, this rule will enable initiation of necessary brucellosis research in Class Free States.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/02/26/E8-3591/brucellosis-in-cattle-research-facilities)
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