Equine Infectious Anemia Virus in Equids: A Large-Scale Serosurvey in Western Europe

Equine Infectious Anemia (EIA) is a notifiable disease caused by Equine Infectious Anemia Virus (EIAV), posing significant sanitary and economic risks to equids worldwide. Data on EIAV circulation in Western Europe remain scarce and outdated. This cross-sectional study assessed EIAV seroprevalence in 1676 equids (1444 horses, 106 donkeys, and 126 mules/hinnies) from Southern Spain, Northeastern Spain, Southeastern United Kingdom, and Ireland between 2011 and 2023. We did not detect antibodies against EIAV in the equids analyzed. Our results are in line with those previously reported in Western Europe and support the effectiveness of current surveillance and control measures implemented in accordance with national and international regulations to successfully limit EIAV circulation