Equine Herpesvirus 1 Outbreak Prompts Precautionary Measures in Los Alamos

On November 26, Los Alamos County officials said there were no known cases of Equine Herpesvirus 1, or EHV 1, and no cases of equine herpes myeloencephalopathy, known as EHM, within county limits. The county reported it was monitoring a multistate outbreak linked to horse events in Texas and Oklahoma and taking precautionary measures to protect local animals and the equine community.

County Community Services notified residents that it is coordinating with local veterinarians, the New Mexico Department of Agriculture and other state partners to track the situation and support preventive actions. Officials urged horse owners to review biosecurity best practices, to watch animals closely for respiratory illness, fever or neurologic signs, and to contact a veterinarian if they have concerns.

The advisory carries local public health and economic implications. Outbreaks of EHV 1 can lead to temporary quarantines, event cancellations and increased veterinary demand. For Los Alamos, where small stables, individual owners and community riding programs coexist, the burden of added care and potential movement restrictions can fall unevenly on those with limited access to veterinary services or transportation. Protecting animal health therefore intersects with broader concerns about access to care and the resilience of local agricultural and recreational economies.

Veterinarians are a key frontline resource for diagnosis and guidance. Early detection and rapid reporting help contain spread and limit disruption to events and daily care. Horse owners who travel to or from out of state events should be especially vigilant, given the outbreak links to equine gatherings in other states.

Los Alamos County emphasized that the current status is precautionary and that no local cases were known as of the November 26 advisory. Continued monitoring and collaboration between county services, state agriculture officials and private veterinarians aim to protect animals and reduce community impacts. Horse owners who need assistance should contact their veterinarian promptly, maintain strict biosecurity, and limit nonessential movement of animals until the situation clarifies.