65. Epizootic haemorrhagic disease.

Question 1

Epizootic haemorrhagic disease?

Answer 1

Epizootic haemorrhagic disease

• USA, in wild deer
• Epizootic haemorrhagic disease virus (EHDV), at least 7 serotypes
• Vectored by mosquitoes and midges
• Endothel damage, similar to bluetongue
• Notifiable disease

Question 2

Ibraki disease?

Answer 2

Ibraki disease

• First description in cattle in Japan
• Present in South-East Asia and in the USA
• The virus is one of the EHDV serotypes
• Clinical signs similar to bluetongue (fever, oedema, erosions)
• In endemic areas live, attenuated vaccine available for control

• Differential diagnosis in laboratory:

1. bluetongue,
2. Acabane disease,
3. ephemeral fever