Weekly Disease Roundup: October 5 – October 12, 2026
As of October 12, 2026, Equine Alert recorded 23 new disease alerts across 11 states over the past week, led by West Nile Virus.
This Week at a Glance
| Metric | This Week | Last Week | Change |
|---|---|---|---|
| Total Alerts | 23 | 14 | +64% |
| States Affected | 11 | — | — |
| Diseases Reported | 4 | — | — |
Activity by Disease
| Disease | Alerts |
|---|---|
| West Nile Virus | 9 |
| Pigeon Fever | 7 |
| Strangles | 6 |
| Potomac Horse Fever | 1 |
Activity by State
| State | Alerts | Primary Disease |
|---|---|---|
| Oregon | 7 | Pigeon Fever |
| Wisconsin | 3 | Strangles |
| Tennessee | 2 | West Nile Virus |
| Florida | 2 | Strangles |
| Kansas | 2 | West Nile Virus |
| Utah | 2 | West Nile Virus |
| California | 1 | West Nile Virus |
| Kentucky | 1 | West Nile Virus |
| Alberta | 1 | Potomac Horse Fever |
| Indiana | 1 | West Nile Virus |
| Michigan | 1 | Strangles |
This Week's Alerts
- October 9 | Pigeon Fever | Deschutes, Oregon — official quarantine
- October 9 | Pigeon Fever | Morrow, Oregon — official quarantine
- October 9 | West Nile Virus | Shasta, California
- October 9 | West Nile Virus | Shelby, Tennessee
- October 9 | Pigeon Fever | Deschutes, Oregon — official quarantine
- October 8 | Pigeon Fever | Deschutes, Oregon — official quarantine
- October 8 | Strangles | Jefferson, Wisconsin — voluntary quarantine
- October 8 | West Nile Virus | Green, Kentucky
- October 8 | Potomac Horse Fever | Rocky View, Alberta
- October 8 | West Nile Virus | Elkhart, Indiana
- October 8 | Strangles | Dane, Wisconsin — voluntary quarantine
- October 7 | Strangles | Brevard, Florida
- October 7 | Strangles | Brevard, Florida
- October 7 | Pigeon Fever | Deschutes, Oregon — official quarantine
- October 7 | West Nile Virus | Wilson, Tennessee
- October 7 | Pigeon Fever | Deschutes, Oregon — official quarantine
- October 7 | Pigeon Fever | Morrow, Oregon — official quarantine
- October 7 | West Nile Virus | Rawlins, Kansas
- October 7 | West Nile Virus | Miami, Kansas
- October 6 | West Nile Virus | Box Elder, Utah
- October 6 | West Nile Virus | Weber, Utah
- October 6 | Strangles | Fond du Lac, Wisconsin — voluntary quarantine
- October 6 | Strangles | Ottawa, Michigan
Protect Your Horses
Disease activity shifts week to week. A few habits go a long way:
- Check destination states for disease activity before you travel or compete
- Isolate returning horses for 14–21 days when possible
- Monitor temperatures daily — fever is often the first sign of EHV-1
- Avoid nose-to-nose contact and don't share water buckets or equipment at events
- Inspect wounds daily and keep them clean and covered
Want alerts the moment a new outbreak is reported in your state? Sign up for free email alerts or explore the interactive outbreak map. Data sourced from the Equine Disease Communication Center (EDCC).