The strategy of collective control of B.V.D implies to first define an objective: the virus eradication, or an acceptable cohabitation with it. Strategies developped in Brittany and in Burgundy are illustrating those two possible orientations, justified by different epidemiological, technical, economic and politic contexts.

In Brittany, breeding farms are relatively isolated, milking herds are conducted in one unique lot, and tank milk is surveyed, which allow to conduct an eradication based on the identification of herds with viral circulation.

In Burgundy, the proximity contaminations, the lengh of grazing, the allotment practices, and the cost of blood samples controls make it difficult to conduct a strict health prophylaxis, and stock breeders are encouraged to protect thier herds from BVD thanks to vaccination. Each region has developped its own monitoring tools, adaptated to its objective.

Questions remain about the cohabitation of those two strategies and about the choice of a national strategy. The code of the exchanges, defined at a national scale, already gives harmonized rules to garanty non IPI animals for the exchanges of cattle. Veterinarians must be aware of those stakes, in order to give better advice to their clients.