West Nile Virus in Pennsylvania
Pennsylvania has no recent West Nile Virus activity, but 11 alerts have been recorded historically.
Risk Level
🟢 Low
No cases reported in the past 30 days
Cases (30 days)
0
Total Cases
26
Counties Affected
10
Most recent West Nile Virus alert in Pennsylvania: Sep 12, 2025
West Nile Virus Alerts in Pennsylvania
Cumberland and Luzerne, Pennsylvania
Sep 12, 2025 · active
3
confirmed
Union, Pennsylvania
Sep 3, 2025 · active
6
confirmed
Washington, Pennsylvania
Oct 10, 2024 · active
1
confirmed
Dauphin, Pennsylvania
Sep 30, 2024 · active
1
confirmed
Northumberland, Pennsylvania
Sep 30, 2024 · active
1
confirmed
Montour, Pennsylvania
Sep 3, 2024 · active
1
confirmed
Cumberland, Pennsylvania
Aug 31, 2024 · active
1
confirmed
Union, Pennsylvania
Aug 28, 2024 · active
1
confirmed
Lancaster, Pennsylvania
Aug 27, 2024 · active
5
confirmed
Juniata, Pennsylvania
Aug 27, 2024 · active
2
confirmed
Chester, Pennsylvania
Aug 27, 2024 · active
4
confirmed
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