Emerging threat: Study reveals gaps in knowledge about EHDV transmission in Europe A new study highlights significant gaps in our understanding of the transmission dynamics of epizootic haemorrhagic disease virus (EHDV) which primarily infects cattle and deer. To date, limited attention has been given to quantifying the transmission of EHDV. Published in Royal Society Open Science, the study by Transmission Biology Group Lead Dr Simon Gubbins developed a mathematical model to describe the spread of EHDV. The study found that the virus’ potential to spread varies depending on factors such as strain and host species, with temperature strongly affecting transmission rates. The Pirbright Institute is undertaking experiments to determine the potential for EHDV to spread and impact on livestock within the UK.