Weekly Disease Roundup: November 2 – November 9, 2026
As of November 9, 2026, Equine Alert recorded 14 new disease alerts across 7 states over the past week, led by West Nile Virus.
This Week at a Glance
| Metric | This Week | Last Week | Change |
|---|---|---|---|
| Total Alerts | 14 | 33 | -58% |
| States Affected | 7 | — | — |
| Diseases Reported | 5 | — | — |
Activity by Disease
| Disease | Alerts |
|---|---|
| West Nile Virus | 8 |
| New World Screwworm | 2 |
| Strangles | 2 |
| Equine Herpesvirus-1 Neurologic | 1 |
| Eastern Equine Encephalitis | 1 |
Activity by State
| State | Alerts | Primary Disease |
|---|---|---|
| Florida | 7 | West Nile Virus |
| Oklahoma | 2 | West Nile Virus |
| Arizona | 1 | New World Screwworm |
| New Mexico | 1 | New World Screwworm |
| Tennessee | 1 | West Nile Virus |
| Indiana | 1 | West Nile Virus |
| California | 1 | Equine Herpesvirus-1 Neurologic |
This Week's Alerts
- November 6 | West Nile Virus | Osceola, Florida
- November 6 | West Nile Virus | Osceola, Florida
- November 5 | New World Screwworm | Greenlee, Arizona
- November 5 | New World Screwworm | Eddy, New Mexico
- November 5 | West Nile Virus | Williamson, Tennessee
- November 5 | West Nile Virus | Jefferson, Indiana
- November 4 | Strangles | Dade, Florida
- November 4 | West Nile Virus | Kay, Oklahoma
- November 4 | West Nile Virus | Oklahoma, Oklahoma
- November 4 | Strangles | Dade, Florida
- November 3 | Equine Herpesvirus-1 Neurologic | Los Angeles, California — resolved
- November 2 | Eastern Equine Encephalitis | Columbia, Florida
- November 2 | West Nile Virus | Columbia, Florida
- November 2 | West Nile Virus | Columbia, Florida
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).