The 1918 influenza pandemic remains the deadliest ... host was spreading a pre-pandemic avian-origin virus before 1918: the horse. The idea is biologically plausible and historically grounded ...

CAÑON CITY, Colo. — An equine influenza virus could be the cause of a highly contagious disease outbreak that has killed over 100 horses at a wild horse facility in Cañon City. Positive ...