Bovine Viral Diarrhea (BVD): a name that minimizes the pathogenicity of this viral disease


Abstract

The bovine viral diarrhea (BVD) is a complex disease with diversified symptoms and severe outcomes. The immunosuppression promoted by the BVD virus allows concomitant pathogens to fully express their clinical pathology.

BVD is widely present in the Italian farms, both BVD type 1 and type 2 have been detected, and it represents a heavy economic impact. Vaccination has helped to limit pathologic effects related to the infection, but this alone is not an eradication strategy. There are several eradication strategies, the selection of the most adequate strategy for implementation requires the assessment of surrounding circumstances and subsequent systematic approach. In order to achieve BVD eradication it is essential a close collaboration between veterinaries, farmers and workers.

Until now eradication strategies do not include vaccination because it interferes with the serologic monitoring of non-infected farms. A marker vaccine against BVD would represent a notorious conquest and would allow the possibility to perform periodic serologic control and monitor a farm status after removal of infected animals.

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Prof. Sandro Cavirani – Dipartimento di Scienze Medico Veterinarie, Università di Parma