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2019 Annual Report

Source: Equine Disease Communication Center | 01/21/2020 10:55:00 AM The Equine Disease Communication Center posted 414 alerts reporting on 963 horses or in the case of vesicular stomatitis, the number of premises affected. Click here to view...

EDCC August 2023 Statistics

Outbreak summary for August 1-31, 2023 138 alerts posted reporting on 152 horses Disease State Confirmed Eastern Equine Encephalitis 21 cases Florida 3 Georgia 1 New York 4 North Carolina 5 Ontario 5 South Carolina 3 Equine Herpesvirus- Respiratory...

EDCC July 2023 Statistics

Outbreak summary for July 1-31, 2023 42 alerts posted reporting on 45 horses Disease Confirmed Eastern Equine Encephalitis 6 cases Florida 2 Georgia 4 Equine Herpesvirus- Neurologic 2 cases Florida 1 Nevada 1 Equine Infectious Anemia 7 cases...

EDCC November 2023 Statistics

Outbreak Summary for November 1-30, 2023 44 alerts posted, reporting on 41 horses. Disease State Confirmed Eastern Equine Encephalitis 3 Cases Florida 2 Quebec 1 Equine Herpesvirus- Neurologic 5 Cases Maine 2 Nova Scotia 1 Ontario 2 Equine...

EDCC September 2023 Statistics

Outbreak summary for September 1-30, 2023 113 alerts posted reporting on 162 horses Disease State Confirmed Eastern Equine Encephalitis 16 cases Georgia 1 Maine 1 Michigan 1 New Jersey 1 New York 2 North Carolina 1 Ontario 7 Quebec 1...

Infectious Diseases

Infectious disease in horses is caused by a specific MICROBIAL agent such as a bacteria, viruses, or parasites. When left untreated, infectious disease can spread rapidly in groups of horses. Use the table below to learn more about a specific...

Vesicular Stomatitis

What is Vesicular Stomatitis? Vesicular stomatitis is a viral disease of horses, donkeys, mules, cattle, swine and New World camelids that occurs in the Western Hemisphere. The disease is named for the characteristic vesicular lesions it causes in...

Vesicular Stomatitis Confirmed in Arizona

Vesicular Stomatitis Confirmed in Arizona Two cases of vesicular stomatitis New Jersey Virus (VSNJV) have been confirmed in Cochise County, AZ. The cases were confirmed positive by the National Veterinary Services Laboratories on Oct. 31 and were...


Disease Alerts

Alert ID: 5170

Source: USDA-APHIS-Veterinary Services | 9/18/2026

Comments: Since the last VSV situation report (9/14/2026), 2 VSV-presumptive positive equine premises have been identified, 1 in Delta County and 1 in Montezuma County, Colorado. All confirmed cases in the 2025-26 outbreak have been vesicular...

Alert ID: 5150

Source: USDA-APHIS-Veterinary Services | 9/14/2026

Comments: Since the last VSV situation report (9/3/2026), 1 VSV-presumptive positive equine premises has been identified in Montezuma County, Colorado. All confirmed cases in the 2025-26 outbreak have been vesicular stomatitis New Jersey virus...

Alert ID: 5119

Source: USDA-APHIS-Veterinary Services | 9/4/2026

Comments: A new USDA Vesicular Stomatitis situation report, including quarantine release information, is available here https://www.aphis.usda.gov/sites/default/files/vsv-sitrep-9-3-26.pdf...

Alert ID: 5058

Source: Animal and Plant Health Inspection Service, Veterinary Services | 8/19/2026

Comments: Since the last VSV situation report (8/13/2026), three presumptive positive equine premises in La Plata County and Montezuma County, Colorado, have been quarantined. All confirmed cases in the 2025-26 outbreak have been vesicular...

Alert ID: 5041

Source: Animal and Plant Health Inspection Service, Veterinary Services | 8/13/2026

Comments: Since the last VSV situation report (8/10/2026), 1 new confirmed VSV-positive equine premises has been identified in La Plata County, Colorado. All confirmed cases in the 2025-26 outbreak have been vesicular stomatitis New Jersey virus...

Alert ID: 5030

Source: USDA-APHIS-Veterinary Services | 8/10/2026

Comments: Since the last VSV situation report (7/24/2026), 2 new confirmed VSV-positive equine premises have been identified in Montrose County, Colorado. All confirmed cases in the 2025-26 outbreak have been vesicular stomatitis New Jersey virus...

Alert ID: 4998

Source: USDA-APHIS-Veterinary Services | 7/24/2026

Comments: Since the last VSV situation report (7/20/2026), 2 new presumptive positive equine premises have been quarantined, 1 in Archuleta County and 1 in Montezuma County, Colorado. All confirmed cases in the 2025-26 outbreak have been vesicular...

Alert ID: 4991

Source: USDA-APHIS-Veterinary Services | 7/20/2026

Comments: Since the last VSV situation report (7/7/2026), 2 new confirmed positive equine premises have been identified, 1 in Archuleta County and 1 in La Plata County, Colorado (both new affected counties). Additionally, 1 new VSV-presumptive...

Alert ID: 4981

Source: USDA-APHIS-Veterinary Services | 7/7/2026

Comments: Since the last VSV situation report (7/1/2026), two (2) new VSV-presumptive positive equine premises have been quarantined in Rio Arriba County, New Mexico. All confirmed cases in the 2025-26 outbreak have been vesicular stomatitis New...

Alert ID: 4975

Source: USDA-APHIS-Veterinary Services | 7/1/2026

Comments: Since the last VSV situation report (6/30/2026), one (1) new VSV-affected equine premises has been confirmed positive in Montrose County, Colorado (New Affected County). All confirmed cases in the 2025-26 outbreak have been vesicular...