The ongoing spread of bluetongue virus among European farm animals may have started when a cow was inseminated with infected bull semen stored from an earlier outbreak Source: https://www.newscientist.com/article/2242014-frozen-bull-semen-may-have-unleashed-bluetongue-virus-on-farm-animals/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…