The head of the political office of Bulgarian Prime Minister Boyko Borissov, Denitsa Zheleva, who had tested positive for coronavirus late on Thursday, was on the Balkan country’s team at the EU summit earlier this week, a government spokeswoman said on Friday.
The delegation returned to Bulgaria on Tuesday afternoon.
Bulgarian Prime Minister Boyko Borissov has gone into quarantine because of this development.
Borissov, 61, whose first test for coronavirus came out negative, will stay in self-isolation until the results of a second test taken early on Friday come out, a government spokeswoman said.
Bulgaria has registered a spike in coronavirus infections in the past month. On Friday, the Balkan country had 268 new cases, bringing the total to 9,853 including 329 deaths.