President Emmanuel Macron of France has tested positive for the coronavirus, the French presidency said on Thursday, just as his government was trying to lift lockdown restrictions before Christmas and avoid another wave of infections.

“This diagnosis was established after a RT-PCR test that was carried out as soon as the first symptoms appeared,” a statement from the presidency said. It did not reveal what those symptoms were and when they first appeared.

Macron will work in isolation for the next seven days, the statement added. The office of Jean Castex, the country’s Prime Minister, said that he would also work from isolation because of his recent proximity to Macron.

Other world leaders to have contracted the virus this year include President Trump, Prime Minister Boris Johnson, President Jair Bolsonaro and President Andrzej Duda.

Macron, 42, is not known to suffer from any medical problems. But the health of French Presidents is traditionally a closely guarded secret, and France’s 24-hour news channels immediately began speculating on Thursday morning about how sick he might be.

Macron’s test has also affected other leaders across the continent, since he met several foreign and domestic officials in the past week.