A top aide to Polish President Andrzej Duda told the state news agency PAP on Wednesday that Duda had tested positive for COVID-19 and is currently in isolation.
"The president is fine, has no severe symptoms, and is under constant medical care", Chief of Staff Pawel Szrot claimed on his Twitter page.
Duda previously tested positive for the coronavirus in October 2020, when the Polish president tweeted that he was experiencing no COVID-19 symptoms, but that "unfortunately, the test result is absolutely unambiguous".
As for Wednesday's announcement, it comes a few days after Polish Health Minister Adam Niedzielski told local radio station RMF FM that he does not rule out more COVID restrictions to tackle the spread of the new Omicron variant.
"If we see this week that we have a continuation of the upward trend in infections, with roughly 20,000 hospital beds taken, which is still very high, yes, we will be making further aggravating decisions. We will talk about schools, the closure of shopping malls, for example, but I do not want to prejudge", Niedzielski said.
More than 4.1 million cases of COVID-19 have been confirmed in Poland since the start of the pandemic, with 98,034 fatalities in the country, according to the World Health Organisation's latest situation report.
In December, Polish authorities tightened the screws on COVID curbs amid an ongoing surge in cases of the Omicron variant in the country.