EU Commission President Ursula von der Leyen self-isolates after meeting with Covid-19 positive P.

(CNN)European Commission President Ursula von der Leyen is self-isolating after participating in a meeting that was attended by a person who subsequently tested positive for Covid-19, she announced on Twitter.

Von der Leyen said she tested negative for the virus last week and will be tested again on Monday.

"I've been informed that I participated in a meeting last Tuesday attended by a person who yesterday tested positive for COVID-19. In accordance with regulations in force, I'm therefore self-isolating until tomorrow morning. I've tested negative on Thursday & am tested again today," she wrote on Monday.