Epidemiological aspects of equine influenza in the world (review article)

Equine influenza (EI) is a highly contagious respiratory disease that affects horses and has significant economic consequences for the global equine industry. It has a worldwide distribution and cases must be reported to the World Organisation for Animal Health (WOAH). Understanding the epidemiology of the disease, risk factors and enabling conditions is important to prevent the introduction of equine influenza virus.