Bluetongue virus

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Bluetongue virus (BTV) is a Sedoreoviridae dsRNA virus part of the genus Orbivirus. The virus causes Bluetongue disease.^[1][2][3] BTV is relatively fragile and its infectivity is lost in slightly acidic environments.

The recently spreading BTV-3 variant (BTV-3/NET2023) has raised concerns due to its fast spread in Europe, and the introduction of this variant could pose new challenges for disease control.^[4] In response to this, several countries have implemented vaccination campaigns, but the challenge lies in matching vaccines to the circulating strain. The BTV-3 variant’s genetic stability has been confirmed through sequencing, and vaccines currently in use are expected to be effective against it.^[5][6]