Equine Alerts

West Nile Virus in Oregon

As of September 2026, Oregon has 1 West Nile Virus alert in the past 30 days (1 confirmed case).

Risk Level
🟡 Moderate
Isolated cases — monitor the situation
Cases (30 days)
1
Total Cases
5
Counties Affected
3

Most recent West Nile Virus alert in Oregon: Aug 31, 2026

West Nile Virus Alerts in Oregon

Malheur, Oregon
Aug 31, 2026 · active
1
confirmed
Union, Oregon
Aug 14, 2026 · active
1
confirmed
Lake, Oregon
Oct 9, 2025 · active
1
confirmed
Lake, Oregon
Oct 7, 2025 · active
1
confirmed
Malheur, Oregon
Aug 22, 2024 · active
1
confirmed

About West Nile Virus

Mosquito-borne virus causing neurological disease

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