Article 5Duration of the measures
If the neuraminidase type is confirmed as being different from N1, the measures provided for in Articles 3 and 4 shall be abolished.
If the presence of an influenza A virus of the subtype H5N1 in wild birds is confirmed, the measures provided for in Articles 3 and 4 shall apply for as long as is necessary having regard to the geographical, administrative, ecological and epizootiological factors relating to avian influenza and for at least 21 in the case of the protection zone and 30 days in the case of the surveillance zone after the date on which an H5 avian influenza virus collected from a clinical case in wild birds has been isolated.