Total number of 115 cases in 29 states including MN (1), IA (2) and WI (3)
Eastern Equine Encephalitis (EEE)
Total number of 65 cases in 11 states including MI (3) and WI (34)
EEE has a 90% mortality rate.
Western Equine Encephalitis (WEE)
One case reported in Arizona
Equine Herpes Virus Type 1(EHV-1) and Equine Herpes Myeloencephalopathy (EHM)-neurologic form of EHV-1
Update: January 5th, 2012 confirmed case of Neurologic EHV-1 in North Carolina.
Several horses competing at an event in Ogden, Utah in April 2011 were diagnosed with EHV-1. Following this event, reports were received about affected horses from multiple states and Western Canada. The total number of 90 confirmed EHV-1 or EHM cases were reported in 10 States (AZ, DA, CO, ID, NM, NV, OK, OR, UT and WA).
EHV-1 Confirmed
Cases
EHM Confirmed
Cases
Dead or Euthanized
Horses exposed at Ogden, Utah event(421)
28
26
10
Secondary and tertiary exposed horses(1685)
29
7
3
TOTAL(2106)
57
33
13
Additional EHV-1 and EHM information can be found on the Anoka Equine web site, the American Association of Equine Practitioners (AAEP) web site and the USDA APHIS web site.
