It doesn't affect people or food safety, and there are no current confirmed cases in Derbyshire.
See the government's latest bluetongue updates
Bluetongue can cause fever, crusting and ulcers around muzzle area, swollen head, salivating and lameness.
In the most severe cases, it can cause abortions, malformations, and death in animals.
Clinical signs are not always present despite infection.
Reporting bluetongue
Bluetongue is a notifiable disease, which means you have to report it by law.
If you suspect bluetongue, report it immediately by calling the Animal and Plant Health Authority (APHA) on telephone: 03000 200 301
What to look out for
The APHA have guidance on spotting and preventing the spread of bluetongue.