Changes made by 98/450/EC: Commission Decision of 3 July 1998 amending Decision 97/586/EC on certain protective measures in respect of infectious anaemia in salmon in Norway (notified under document number C(1998) 1845)
EU Decision 1998/450
Made to 97/586/EC: Commission Decision of 25 July 1997 on certain protective measures in respect of infectious anaemia in salmon in Norway
From legislation.gov.uk's record of changes, the official one: see it there.