Clinical Context Peer-reviewed veterinary literature continues to shape everyday decision-making for production animal practice, especially when new evidence clarifies diagnosis, treatment selection, monitoring, or clinical outcomes.

What the Study Evaluated A study published in BMC veterinary research in 2026 evaluated brucella abortus RB51 vaccination: a comprehensive systematic review of safety, efficacy, and global field outcomes (1990-2025)..

Key Findings Brucella abortus strain RB51 is a live attenuated rough vaccine developed to overcome the serological interference of conventional smooth vaccines. Since replacing strain S19 in the United States (1996) and globally thereafter, RB51 has been promoted as a DIVA (Differentiating Infected from Vaccinated Animals) vaccine for brucellosis control in cattle and other livestock. However, conflicting reports on its safety, efficacy, an…