Changes made by 2004/187/EC: Commission Decision of 24 February 2004 concerning protection measures in relation to highly pathogenic avian influenza in the United States of America (notified under document number C(2004) 640)
EU Decision 2004/187
No changes made by 2004/187/EC: Commission Decision of 24 February 2004 concerning protection measures in relation to highly pathogenic avian influenza in the United States of America (notified under document number C(2004) 640) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.