Rabbit Hemorrhagic Disease (RHDV/RHDV2): What You Need to Know

Quick Answer
  • Rabbit hemorrhagic disease virus, especially RHDV2, is a highly contagious viral disease that can cause sudden death, severe liver injury, internal bleeding, and neurologic signs in rabbits.
  • Some rabbits show no warning signs before collapse. Others may develop fever, low appetite, lethargy, trouble breathing, bleeding from the nose or mouth, or seizures over 12 to 72 hours.
  • There is no specific antiviral cure. Care is supportive and focused on isolation, comfort, fluids, oxygen, and preventing spread to other rabbits.
  • RHDV2 spreads through direct rabbit contact and contaminated bedding, hay, cages, shoes, hands, insects, and carcasses. Indoor rabbits can be exposed too.
  • If your rabbit seems suddenly weak, stops eating, has a fever, bleeds, or dies unexpectedly, contact your vet right away and isolate all rabbits in the home.
Estimated cost: $90–$250

What Is Rabbit Hemorrhagic Disease (RHDV/RHDV2)?

Rabbit hemorrhagic disease is a severe viral illness caused by a lagovirus in the calicivirus family. In pet rabbits, the strain most people hear about now is RHDV2, which has become the main concern in many areas because it spreads efficiently and can affect both domestic rabbits and several wild rabbit and hare species. It does not infect people, dogs, or cats, but it can move on clothing, shoes, carriers, hay, and other objects that come into contact with infected material.

This disease mainly attacks the liver and can trigger widespread bleeding and clotting problems. Some rabbits die so quickly that there are no obvious signs beforehand. Others may show vague signs like low appetite, hiding, fever, or lethargy before rapidly worsening.

For pet parents, the hardest part is how fast this disease can move. A rabbit that looked only mildly off in the morning may be critically ill later the same day. That is why any sudden illness in a rabbit deserves prompt attention from your vet, especially if there has been possible exposure to other rabbits, rescue settings, shows, boarding, or outdoor contamination.

Symptoms of Rabbit Hemorrhagic Disease (RHDV/RHDV2)

  • Sudden death with little or no warning
  • Fever, then rapid collapse
  • Severe lethargy, hiding, or weakness
  • Loss of appetite or refusal to eat
  • Trouble breathing or fast breathing
  • Bleeding from the nose, mouth, or rectum
  • Blood-stained discharge around the nose
  • Neurologic signs such as tremors, loss of coordination, or seizures
  • Depression or reduced responsiveness
  • Yellow or pale gums in advanced cases

See your vet immediately if your rabbit has sudden lethargy, stops eating, develops breathing changes, shows bleeding, or has any neurologic signs. Rabbits can decline very quickly, and some infected rabbits die within 1 to 3 days of infection. Even if the signs seem mild at first, isolate your rabbit from other rabbits and call your vet the same day for guidance on safe transport, testing, and disinfection.

What Causes Rabbit Hemorrhagic Disease (RHDV/RHDV2)?

Rabbit hemorrhagic disease is caused by a highly contagious virus, not by diet, stress, or routine GI upset. The virus is shed in body fluids and can spread through direct contact with infected rabbits as well as indirect contact with contaminated items. That includes cages, litter boxes, bowls, bedding, hay, grooming tools, carriers, clothing, shoes, and hands.

RHDV2 is especially concerning because it is environmentally hardy. It can remain infectious for weeks to months under the right conditions, including in carcasses and on contaminated materials. Insects and scavengers may also mechanically spread the virus, which means even indoor rabbits are not completely protected if biosecurity is loose.

Exposure risks include bringing home a new rabbit without quarantine, visiting rescue or boarding environments, handling wild rabbits, walking through areas with wild rabbit activity, or using supplies that were exposed to infected rabbits. Pet parents should also know that rabbits who survive infection may continue shedding virus for a period of time, so your vet may recommend strict isolation and cleaning even after a rabbit seems improved.

How Is Rabbit Hemorrhagic Disease (RHDV/RHDV2) Diagnosed?

Diagnosis can be challenging in a living rabbit because the signs overlap with other emergencies, including severe GI disease, sepsis, toxin exposure, heat stress, pneumonia, or other causes of sudden collapse. Your vet will start with history, exposure risk, physical exam findings, and basic stabilization. Bloodwork may show liver injury, clotting problems, or other changes, but these findings are not specific enough to confirm RHDV2 on their own.

A confirmed diagnosis usually relies on specialized testing, most often PCR on appropriate samples. In many cases, confirmation happens after death through necropsy and testing of liver and spleen tissue. Postmortem findings may include a pale or damaged liver, enlarged spleen, and bleeding in multiple organs.

Because rabbit hemorrhagic disease is a reportable animal health concern in many settings, your vet may need to coordinate with a state veterinarian, diagnostic laboratory, or animal health officials before sample submission. If a rabbit in your home dies suddenly, do not discard the body or clean everything up before speaking with your vet. Safe handling and proper testing can help protect your other rabbits.

Treatment Options for Rabbit Hemorrhagic Disease (RHDV/RHDV2)

Spectrum of Care means you have options. Here are treatment tiers at different price points.

Budget-Conscious Care

$150–$600
Best for: Rabbits with mild early signs, exposed but not yet critically ill rabbits, or families who need a focused plan while staying within a tighter budget.
  • Urgent exam with rabbit isolation precautions
  • Symptom-based supportive care such as warming, syringe-feeding guidance only if safe, and subcutaneous fluids when appropriate
  • Home isolation plan for exposed housemates
  • Targeted discussion of testing versus monitoring based on your rabbit's condition and local reporting guidance
  • Cleaning and disinfection instructions to reduce spread
Expected outcome: Guarded to poor if true RHDV2 infection is present. Some rabbits may die despite prompt supportive care.
Consider: This approach may help with comfort and triage, but it offers less monitoring and fewer interventions if your rabbit declines quickly. It may also limit how much same-day diagnostics can be done.
Most Common

Recommended Standard Treatment

$600–$1,800
Best for: Most pet rabbits who are sick enough to need active medical support but are not yet in full critical collapse.
  • Urgent or same-day rabbit exam
  • Isolation and barrier nursing
  • Bloodwork and supportive diagnostics as appropriate
  • Subcutaneous or IV fluids, assisted feeding when appropriate, anti-nausea medication, pain control, and oxygen support if needed
  • Discussion of PCR testing, reporting steps, and management of exposed rabbits in the household
Expected outcome: Still guarded to poor. Survival is possible in some cases, especially with less severe disease, but mortality remains high.
Consider: Provides more active support and monitoring, but cost range is higher and some rabbits may still worsen rapidly even with treatment.

Advanced / Critical Care

$1,800–$4,500
Best for: Critically ill rabbits with collapse, severe breathing changes, seizures, profound weakness, or pet parents who want the most intensive monitoring available.
  • 24-hour or specialty hospitalization when available
  • IV catheter care, continuous fluid therapy, oxygen therapy, warming support, and intensive monitoring
  • Repeat bloodwork, glucose and electrolyte monitoring, and management of shock or severe respiratory distress
  • Advanced nursing care with strict infectious disease precautions
  • Postmortem planning and household outbreak management if the rabbit does not survive
Expected outcome: Poor to grave in severe cases, even with intensive care. Advanced care may improve comfort, monitoring, and response time, but it cannot guarantee survival.
Consider: This tier offers the most support but requires the highest cost range and may not be available in every area, especially after hours.

Cost estimates as of 2026-03. Actual costs vary by location, clinic, and individual case.

Questions to Ask Your Vet About Rabbit Hemorrhagic Disease (RHDV/RHDV2)

Bring these questions to your vet appointment to get the most out of your visit.

  1. Based on my rabbit's signs and exposure history, how concerned are you about RHDV2 versus other emergencies?
  2. Does my rabbit need immediate isolation from other rabbits in the home, and for how long?
  3. What supportive care options are available today, and which fit my rabbit's condition and my budget?
  4. Would bloodwork change treatment decisions right now, or is PCR or necropsy more useful for confirmation?
  5. If my rabbit dies suddenly, how should I store the body and arrange safe postmortem testing?
  6. What disinfectants work against RHDV2, and how should I clean carriers, bowls, floors, litter boxes, and shoes?
  7. Should my other rabbits be vaccinated or boosted, and what timing do you recommend for my area?
  8. Are there any state reporting steps or movement restrictions I need to know about?

How to Prevent Rabbit Hemorrhagic Disease (RHDV/RHDV2)

Prevention centers on vaccination, quarantine, and biosecurity. If RHDV2 vaccination is available in your area, ask your vet whether your rabbit should receive it and how often boosters are recommended. Vaccine protocols can vary by product, local risk, and state availability, so your vet is the best source for a plan tailored to your rabbit.

At home, keep pet rabbits separated from wild rabbits and hares, and avoid bringing outdoor contamination inside. Wash hands before handling rabbits, change shoes after visiting parks or rescue settings, and clean carriers, bowls, and litter tools regularly. New rabbits should be quarantined before introduction, and shared equipment between households should be avoided.

If you live in or travel through an affected area, be extra careful with hay storage, outdoor forage, and insects entering the home. Do not handle dead wild rabbits with bare hands. If your rabbit becomes sick or dies suddenly, isolate all rabbits immediately and contact your vet before moving the body, deep-cleaning the enclosure, or disposing of bedding. Fast action can help protect the rest of your rabbit family.

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