The Iowa State Department of Agriculture and Land Stewardship reported that one horse in Davis County and one horse in Union County were confirmed positive for West Nile virus (WNV).
The horse in Davis County was a 15-year-old Thoroughbred mare that had onset of clinical signs on June 24. Those signs included hind limb ataxia and muscle fasciculations. The mare was confirmed positive for West Nile virus on June 28. She is recovering and was reported to be under-vaccinated.
The horse in Union County was a 2-year-old Quarter Horse gelding that was confirmed with West Nile virus on June 19. He is recovering. The horse had mild clinical signs and no history of vaccination against West Nile virus.