Rabbit Vaccinations in Pennsylvania: RHDV2 Is Mandatory

Yes—Pennsylvania requires annual vaccination against Rabbit Hemorrhagic Disease Virus Type 2 (RHDV2) for all domestic rabbits, per the Pennsylvania Domestic Rabbit Law (3 Pa.C.S. § 2301 et seq.).

Key Requirements

• Vaccine: Medgene Labs RHDV2 (inactivated, USDA emergency use authorized)
• Schedule: Initial 2-dose series (21 days apart), then annual booster
• Administered by: Licensed veterinarian
• Record: Vet must issue certificate; owner must retain

Why It Matters

• RHDV2 is highly contagious, often fatal (70–100% mortality)
• Affects wild & domestic rabbits, hares, pikas
• Spreads via direct contact, fomites, insects, predators, humans
• Environmental persistence: months
• Outbreaks in PA (2022–present) triggered the mandate

Other Vaccines (Vet-Dependent)

• Myxomatosis: Not licensed in US; some vets import (off-label)
• Pasteurella, Bordetella: Situational (shelters, breeding)

Action Steps

1. Find a rabbit-savvy vet (exotic/small mammal experience)
2. Schedule initial series ASAP if unvaccinated
3. Mark calendar for annual booster
4. Practice biosecurity: no wild rabbit contact, quarantine new rabbits 30 days, disinfect

Disclaimer: Not veterinary advice. Consult your veterinarian for your rabbit's specific needs.