Eastern Equine Encephalitis in Ontario
Ontario has no recent Eastern Equine Encephalitis activity, but 31 alerts have been recorded historically.
Risk Level
🟢 Low
No cases reported in the past 30 days
Cases (30 days)
0
Total Cases
31
Counties Affected
16
Most recent Eastern Equine Encephalitis alert in Ontario: Oct 6, 2025
Eastern Equine Encephalitis Alerts in Ontario
Simcoe, Ontario
Oct 6, 2025 · active
1
confirmed
Regional Municipality of Halton, Ontario
Sep 3, 2025 · active
1
confirmed
Renfrew, Ontario
Sep 3, 2025 · active
1
confirmed
City of Hamilton, Ontario
Aug 26, 2025 · active
1
confirmed
City of Ottawa, Ontario
Aug 26, 2025 · active
1
confirmed
City of Hamilton, Ontario
Aug 18, 2025 · active
1
confirmed
Wellington, Ontario
Aug 14, 2025 · active
1
confirmed
Wellington, Ontario
Jul 29, 2025 · active
1
confirmed
Haldimand, Ontario
Oct 23, 2024 · active
1
confirmed
Lanark, Ontario
Oct 11, 2024 · active
1
confirmed
United Counties of Leeds and Grenville, Ontario
Oct 8, 2024 · active
1
confirmed
Middlesex, Ontario
Oct 8, 2024 · active
1
confirmed
United Counties of Prescott and Russell, Ontario
Oct 8, 2024 · active
1
confirmed
Dundas and Glengarry, Ontario
Oct 1, 2024 · active
1
confirmed
Hastings, Ontario
Sep 25, 2024 · active
1
confirmed
Lambton, Ontario
Sep 20, 2024 · active
1
confirmed
Hastings, Ontario
Sep 16, 2024 · active
1
confirmed
Regional Municipality of Niagara, Ontario
Sep 11, 2024 · active
1
confirmed
District of Parry Sound, Ontario
Sep 3, 2024 · active
1
confirmed
United Counties of Leeds and Grenville, Ontario
Sep 3, 2024 · active
1
confirmed
United Counties of Leeds and Grenville, Ontario
Sep 3, 2024 · active
1
confirmed
Lanark, Ontario
Aug 26, 2024 · active
1
confirmed
United Counties of Leeds and Grenville, Ontario
Aug 20, 2024 · active
1
confirmed
United Counties of Leeds and Grenville, Ontario
Aug 19, 2024 · active
1
confirmed
Lanark, Ontario
Aug 19, 2024 · active
1
confirmed
Showing the 25 most recent of 31 total alerts.
About Eastern Equine Encephalitis
Mosquito-borne virus with high mortality rate
Full Eastern Equine Encephalitis guide →Get alerted about Eastern Equine Encephalitis in Ontario
We'll email you whenever a new equine disease outbreak is reported in Ontario. Unsubscribe anytime.