By Nancy Carr MD
This is the detective story about the discovery that BVD (bovine viral diarrhea) virus, originally thought to be an insignificant problem for camelids, does indeed cause illness and abortions in alpacas, and that it can also cause the persistenly infected (PI) state in alpacas. This has fairly far reaching consequences for alpaca farming. For detailed information on BVD virus itself, please see the accompanying article. Like any detective story, my narrative is long and detailed. Also like a detective story, looking back, the solution looks fairly clear; working forward from the beginning it was not clear at all. Read the entire article
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