Weekly Disease Roundup: October 19 – October 26, 2026
As of October 26, 2026, Equine Alert recorded 17 new disease alerts across 3 states over the past week, led by Pigeon Fever.
This Week at a Glance
| Metric | This Week | Last Week | Change |
|---|---|---|---|
| Total Alerts | 17 | 35 | -51% |
| States Affected | 3 | — | — |
| Diseases Reported | 3 | — | — |
Activity by Disease
| Disease | Alerts |
|---|---|
| Pigeon Fever | 14 |
| West Nile Virus | 2 |
| Equine Herpesvirus-1 Neurologic | 1 |
Activity by State
| State | Alerts | Primary Disease |
|---|---|---|
| Oregon | 14 | Pigeon Fever |
| Tennessee | 2 | West Nile Virus |
| California | 1 | Equine Herpesvirus-1 Neurologic |
This Week's Alerts
- October 23 | Equine Herpesvirus-1 Neurologic | Los Angeles, California — official quarantine
- October 23 | West Nile Virus | Greene, Tennessee
- October 21 | Pigeon Fever | Deschutes, Oregon — official quarantine
- October 21 | Pigeon Fever | Deschutes, Oregon — official quarantine
- October 21 | Pigeon Fever | Morrow, Oregon — official quarantine
- October 21 | Pigeon Fever | Jackson, Oregon — official quarantine
- October 21 | Pigeon Fever | Crook, Oregon — resolved
- October 21 | Pigeon Fever | Jackson, Oregon — official quarantine
- October 21 | Pigeon Fever | Deschutes, Oregon — official quarantine
- October 21 | Pigeon Fever | Deschutes, Oregon — official quarantine
- October 21 | Pigeon Fever | Deschutes, Oregon — official quarantine
- October 21 | Pigeon Fever | Jackson, Oregon — official quarantine
- October 21 | Pigeon Fever | Deschutes, Oregon — official quarantine
- October 21 | Pigeon Fever | Deschutes, Oregon — official quarantine
- October 21 | West Nile Virus | Washington, Tennessee
- October 21 | Pigeon Fever | Jackson, Oregon — official quarantine
- October 21 | Pigeon Fever | Deschutes, Oregon — official quarantine
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).