St Mirren have been hit by "a number" of positive Covid cases ahead of their clash with Celtic on Wednesday.
The Paisley side have suspended training and are in consultation with the SPFL regarding upcoming fixtures.
The club are set to face Ange Postecoglou's men in their final match before Christmas.
And on Boxing Day Jim Goodwin's men are scheduled to travel to Ibrox to face champions Rangers, though as it stands their upcoming games are going ahead.
The Buddies faced a number of outbreaks last season, with games against Motherwell and Hamilton postponed.
A club statement read: " St Mirren Football Club can confirm that following recent lateral flow testing we have unfortunately received a number of positive COVID-19 cases.
"In line with Government guidelines, those affected have now taken PCR tests and will self-isolate for 10 days.
"Training has been suspended, but as it stands our upcoming matches will still go ahead. We will continue to monitor the situation over the coming days.
"The health and wellbeing of our players and staff remains our utmost priority.
"St Mirren Football Club will make no further comment at this time. "
The outbreak comes as Dundee United 's fixture with Gio van Bronckhorst's side has been plunged into doubt after positive Covid tests at Tannadice.
Scottish Professional Football League chiefs are awaiting for more information ahead of this weekend’s clash with Rangers at Ibrox.
It is understood that both positive tests were registered as lateral flows and the players will now need to do PCR tests and await the results.
