Colorado
Equine Disease Alerts
Risk Assessment
Risk Level
🟡 Moderate
Isolated cases - monitor the situation
Cases (30 days)
1
Total Cases
20
Total Alerts
20
Disease Activity in Colorado
Weekly case intensity by disease - Hover for details
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
WNV
7
EHV-1 Neuro
3
EIA
2
Jul
Aug
Sep
Oct
Nov
Dec
WNV
EHV-1 Neuro
EIA
LessMore
💡
West Nile Virus shows peak activity in summer (Jul-Sep) with 71% of cases occurring during this period.
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Equine Health Resources
Official contacts and requirements for Colorado
🩺State Veterinarian
🚨Report a Disease
📋Coggins Requirements
Coggins test required within 12 months for equines entering Colorado. Required for all sales, public events, and change of ownership.
🔗Additional Resources
Colorado Department of Agriculture
Visit Website →Colorado Horse Council
Visit Website →Recent Alerts in Colorado
Equine Herpesvirus-1 Neurologicofficial quarantine
Larimer
Private Facility
1 cases
Dec 23, 2025
Equine Herpesvirus-1 Neurologicofficial quarantine
Larimer
Private Facility
1 cases
Nov 21, 2025
Equine Herpesvirus-1 Neurologicofficial quarantine
Larimer
Private Facility
1 cases
Nov 20, 2025
West Nile Virusactive
Weld
Private Facility
1 cases
Oct 29, 2025
West Nile Virusactive
Mesa
Private Facility
1 cases
Sep 30, 2025
West Nile Virusactive
Weld
Private Facility
1 cases
Sep 12, 2025
West Nile Virusactive
Weld
Farm
1 cases
Aug 14, 2025
West Nile Virusactive
Montrose
Farm
1 cases
Aug 12, 2025
West Nile Virusactive
Las Animas
Farm
1 cases
Aug 5, 2025
West Nile Virusactive
Douglas
Private Facility
1 cases
Jul 3, 2025
Equine Infectious Anemiaofficial quarantine
Douglas
Private Facility
1 cases
Apr 17, 2025
Equine Infectious Anemiaofficial quarantine
Jefferson
Boarding Facility
1 cases
Apr 17, 2025
West Nile Virusactive
Prowers
Stable
1 cases
Oct 31, 2024
West Nile Virusactive
El Paso
Private Facility
1 cases
Oct 8, 2024
West Nile Virusactive
Douglas
Private Facility
1 cases
Sep 25, 2024
West Nile Virusactive
Douglas
Private Facility
1 cases
Sep 11, 2024
West Nile Virusactive
Weld
Private Facility
1 cases
Aug 30, 2024
West Nile Virusactive
Larimer
Private Facility
1 cases
Aug 22, 2024
West Nile Virusactive
Larimer
Private Facility
1 cases
Aug 22, 2024
West Nile Virusactive
Pueblo
1 cases
Aug 19, 2024