Barcelona have called off their scheduled Tuesday training session after two members of first team staff tested positive for the coronavirus.
Ronald Koeman’s side were due to be preparing for their La Liga match against Athletic Bilbao at Sam Mames Stadium on Thursday.
The Catalan club informed sports and health authorities after Monday's test results.
A club statement read: "The whole squad will undergo further PCR testing on Tuesday morning local time in line with La Liga protocol.
"As a result the training session planned for tomorrow Tuesday at 11.00am CET has been postponed.
"The new time for training and the subsequent press conference ahead of Athletic Club v FC Barcelona will be announced tomorrow."
Koeman’s team are fifth in the table ahead of their trip to the Basque region to play Athletic, who are eighth.
Barca, who are 10 points off the top of La Liga, have won their previous two on their travels after going four away league games without a win.