EHV vaccines are an important tool, but their role is often misunderstood.

What vaccines can do:

• Reduce severity of respiratory symptoms
• Reduce viral shedding
• Decrease risk in pregnant mares

What vaccines cannot guarantee:

• Full prevention of neurologic EHM
• A virus-proof barn
• Immunity during high-stress travel

Still, a well-timed vaccination schedule reduces overall outbreak severity, especially in show barns and breeding facilities.