Omicron variant alarm of the covid in Sardinia. A passenger returning from Africa on the Rome-Alghero flight landed in Sardinia on Sunday tested positive for covid. Only in a few days will it be possible to know with certainty whether the man, who made a stopover in Holland and Fiumicino, was actually infected by the Omicron variant. In the meantime, however, the preventive quarantine was started for the 130 passengers on board the plane, with a molecular swab tomorrow and then in ten days. If any of them test positive, the tracking will also be triggered for their close contacts.