West Nile Virus in Idaho
As of September 2026, Idaho 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
11
Counties Affected
7
Most recent West Nile Virus alert in Idaho: Sep 16, 2026
West Nile Virus Alerts in Idaho
Minidoka, Idaho
Sep 16, 2026 · active
1
confirmed
Bannock, Idaho
Aug 19, 2026 · active
1
confirmed
Ada, Idaho
Nov 5, 2025 · active
1
confirmed
Twin Falls, Idaho
Sep 18, 2025 · active
1
confirmed
Franklin, Idaho
Aug 25, 2025 · active
1
confirmed
Franklin, Idaho
Aug 19, 2025 · active
1
confirmed
Canyon, Idaho
Sep 25, 2024 · active
1
confirmed
Elmore, Idaho
Sep 13, 2024 · active
1
confirmed
Franklin, Idaho
Sep 12, 2024 · active
1
confirmed
Canyon, Idaho
Sep 12, 2024 · active
1
confirmed
Twin Falls, Idaho
Aug 28, 2024 · active
1
confirmed
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