Equine herpesvirus-1 (EHV-1) can spread stealthily through apparently healthy horses that do not show symptoms, complicating efforts to prevent outbreaks. Research conducted by Nicola Pusterla at the University of California, Davis, revealed that environmental sampling, particularly with stall sponges, can be an effective way to detect the virus and prevent its spread at equestrian events.
The study found that horses that appear healthy can still shed EHV-1, contributing to outbreaks, with the virus accumulating in shared spaces such as stall walls and water buckets. Environmental sampling showed that the virus did not necessarily transfer directly between horses, but could spread subtly in close quarters, making early detection and prevention crucial.
Pusterla emphasized the importance of implementing biosecurity measures at horse shows to control EHV-1, as traditional diagnostic methods might miss shedding. Good hygiene practices, especially in areas prone to droplet contamination, and environmental testing with stall sponges could help in early detection and prevention of outbreaks, limiting the silent spread of EHV-1.
