For pregnant mares, EHV brings a different set of dangers.
The virus can cross the placental barrier, leading to:
- Abrupt abortion (often without warning)
- Premature or weak foals
- Potential outbreaks within the broodmare band
A single EHV abortion often triggers a full-farm lockdown, meaning halted breeding operations, isolation zones, and strict biosecurity for weeks.
For farms operating on seasonal timelines, these losses are not just emotional—they can reshape an entire year’s breeding program.
