Ulster will be without a host of players for Saturday's Guinness Pro14 Rainbow Cup trip to Edinburgh (3pm).
Last weekend’s game at home to Scarlets was cancelled after four players tested positive for Covid-19.
Those four "remain well" say Ulster, while nine additional players were identified as close contacts and must also self-isolate in accordance with public health guidelines.
Meanwhile, John Cooney (neck), Luke Marshall (knee), Jack McGrath (hip), Eric O’Sullivan (shoulder), Jacob Stockdale (shoulder), Ethan McIlroy (hip) and Cormac Izuchukwu (knee) are unavailable through injury.
Ulster are bottom of the table following losses to Leinster, Munster and Connacht.