Ferrari driver Charles Leclerc has tested positive for the coronavirus.
Leclerc said he has mild symptoms but is feeling "OK". He had already been self-isolating at his home in Monaco after being in contact with a subsequent positive case.
Leclerc is the fifth F1 driver to test positive for the virus after Sergio Perez, Lance Stroll, Lewis Hamilton, and Lando Norris.
"I want to let you know that I have tested positive for Covid-19," Leclerc posted on his Twitter account.
"I am regularly checked according to my team's protocols. Unfortunately, I learned that I have been in contact with a positive case and immediately went into self-isolation, notifying anyone I contacted. A subsequent test I took has come back positive.
"I am feeling OK and have mild symptoms. I will remain in isolation in my home in Monaco in compliance with the regulations set by the local health authorities. Stay safe and take care."