Breaking News
National Equine Health Stakeholder Call-October 2026
Learn More

Disease Alerts

Updates on current disease outbreaks are listed here as they occur and will include the date listed, disease name, location and current status. Specific premises will not be named but the general location by town, county and state will be listed. When locations, events or horses are at risk they will be listed. Updates will be posted as they are received.



1 Week
2 Weeks
1 Month
2 Months
3 Months
3+ Months
No Results

The color range is based off of the selected End Date. If the End Date doesn't have a value it will use Today's Date.

Navajo and Coconino Counties, AZ
Alert ID: 1052
September 21, 2018

Arizona State Veterinarian’s office

The Arizona State Veterinarian’s office has received notification of two confirmed cases of West Nile virus (WNV) in horses over the last week. One horse is in Navajo county and the other is in N. Coconino county. Both horses are reportedly responding well to treatment. All of the confirmed cases were in unvaccinated horses or horses with an unknown vaccination history.