We described the aetiological agents of outbreaks of bovine ephemeral fever (BEF) that occurred in 1985 and 2012 in Turkey, and identify mutations in the viruses from both outbreaks. Outbreaks have emerged periodically every 4-5 years in the same regions in Turkey. Because these regions are located in a subtropical climatic zone, good conditions for vector populations exist. The results of this study show that the BEFVs from outbreaks in Turkey vary significantly. Effective prevention will require a vaccine that contains BEFVs from different genetic clusters.
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