VIRAL HAEMORRHAGIC DISEASE (VHD)
Viral Haemorrhagic Disease (VHD) is a very serious infectious
disease that can affect rabbits. Unfortunately, there is no
cure once a rabbit is infected.
Who is at risk?
All rabbits are at risk of VHD.
How is it spread?
VHD is spread by direct contact between rabbits (both wild and
domesticated) and also via indirect contact. Possible sources
of indirect contact are people, clothing, contaminated hutches and
bedding, as well as insect vectors such as fleas.
Cause of VHD
VHD is caused by a calicivirus and has an incubation period
of just one to three days. The virus itself is very stable in
the environment and can survive for up to 105 days.
Signs and symptom
Signs include depression, collapse, difficulty in breathing,
convulsions, high body temperature, lethargy and bleeding from
the nose. Death usually occurs within 12-36 hours after the onset
of fever and the mortality rate can be as high as 90-100%.
Prevention and control
VHD vaccination can be given from eight weeks onwards, but is
usually given at 10-12 weeks. Boosters are given annually for
VHD. |