Northern Ireland have been relegated from Nations League B after Romania were awarded a 3-0 win over Norway for their cancelled match on Sunday.
Norway's health ministry prevented the team from travelling to Bucharest and insisted they went into quarantine following a positive test for Galatasaray right back Omar Elabdellaoui, forcing the game to be cancelled.
The matter was submitted to the UEFA Control, Ethics and Disciplinary Body, who confirmed that Norway had forfeited the match.
"The Chairman of the UEFA Appeals Body today took the following decision: 'To declare the Nations League match between Romania and Norway as forfeited by the Norwegian Football Association, who is therefore deemed to have lost the match 3-0," UEFA said in a statement.
The result means Northern Ireland, who are bottom of Nations League B Group 1, six points behind third-placed Romania with one game to play, are relegated.
Norway face Austria later on Wednesday, while Romania take on Northern Ireland.