Austria has reported two outbreaks of bluetongue disease on cattle farms, according to the World Organisation for Animal Health (WOAH). The first outbreak, in Bregenz, involves the BTV3 virus, which has been spreading rapidly in northern Europe. The second outbreak, in Leoben, is caused by the older BTV4 virus. Sweden has also reported two outbreaks of BTV3. Bluetongue is a deadly disease for domestic ruminants such as sheep, cattle, and goats.