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Abstract
Cattle, sheep, goats and a llama (Lama glama) were among several animals that were grazed at our isolation facility. The llama was introduced about 20 months ago and about 12 months later a cow and its calf, both persistently viraemic to bovine virus diarrhoea virus (BVDV), were also introduced. On several occasions during the last 12 months, the llama and the BVDV viraemic cattle were grazed in adjacent paddocks.