Equine herpesvirus in Alberta

Dec 02, 2025

Equine herpesvirus-1 is responsible for the clinical disease known as Equine Herpesvirus Myeloencephalopathy (EHM).

In 2023 the Office of the Chief Provincial Veterinarian (OCPV) was notified of four cases of EHM in Alberta and in 2024, there was one notification. The OCPV has recently been made aware of one case in 2025.

The OCPV has also been made aware that several cases are being detected in the U.S. As of November 21, fifteen cases had been reported in the U.S. Some events or shows are being cancelled to minimize risk of horses becoming exposed and to help reduce the spread while others are planning to proceed. Those planning to attend should reach out to organizers to check on event status, risk and biosecurity measures in place.

Resources for veterinarians and horse owners:

Government of Alberta: Equine herpesvirus-1
Canadian Food Inspection Agency: Equine herpes myeloencephalopathy (EHM) fact sheet
Texas Animal Health Commission: Equine herpes myeloencephalopathy fact sheet

Video: Alternatives to Antibiotics - Dr. Luciana Rossi

In this special re-run episode of The Swine Nutrition Blackbelt Podcast, we bring back our conversation with Dr. Luciana Rossi, Associate Professor at the University of Milan, who discusses alternatives to antibiotics in swine nutrition. She explores antimicrobial resistance, the role of functional ingredients, and the potential of biochar in improving gut health and sustainability. Tune in now on all major platforms!

"Biochar, a vegetable charcoal produced by pyrolysis, has shown potential in reducing diarrhea incidence and improving gut health in weaning piglets."

Meet the guest: Dr. Luciana Rossi https://www.linkedin.com/in/luciana-r... is an Associate Professor at the University of Milan, specializing in animal nutrition, biotechnology, and innovative feed strategies. Her work focuses on functional ingredients, edible vaccines, and alternatives to antimicrobials to improve swine health and sustainability. Her research advances nutritional solutions that reduce disease risk and environmental impact.