Division 4 In the compartment, the surveillance plan under the responsibility of the compartment manager shall include continuous active surveillance that shall be carried out on 20 blood samples taken at random from poultry, or other captive birds, of the same production unit for serological testing for avian influenza:

at least every six months during the production period where no outbreaks of highly pathogenic avian influenza (HPAI) in poultry or other captive birds, have been confirmed during the preceding six months in F1Great Britain;

at least every three months where an outbreak of HPAI in poultry or other captive birds, has been confirmed during the preceding six months in Great Britain;

when the compartment is located within an area under movement restrictions due to an outbreak of avian influenza pursuant to F2EU-derived domestic legislation, within one week following the date of the outbreak and at least every 21 days; in addition, and without prejudice to any specific provisions of EU-derived domestic legislation, the surveillance plan shall be updated and include enhanced clinical surveillance and active virological surveillance, carried out within one week following the date of the outbreak and at least every 21 days thereafter, on:

1. (i)

   a sample of 20 tracheal/oropharyngeal swabs and 20 cloacal swabs taken at random from poultry or other captive birds of the same production unit; and

2. (ii)

   samples taken on five sick or dead birds if found.