Following a Cabinet reshuffle, President Andrzej Duda had been due to swear in government ministers at 3pm.
But on Monday morning Przemysław Czarnek, who is set to take over as the minister of education and science, confirmed he had COVID-19.
“Prime Minister Morawiecki has asked the president to change the date of the swearing-in" ceremony, government spokesman Piotr Müller said.
Poland has seen a sharp rise in coronavirus infections in recent days.
On Saturday, public health authorities reported 2,367 new COVID-19 cases, the most since the pandemic hit the country in early March.
The Polish health ministry on Monday reported 2,006 new coronavirus infections and 29 more deaths.
A total of 102,080 people have tested positive for the coronavirus in Poland since the start of the epidemic, and 2,659 have died from the COVID-19 respiratory disease so far.
(pk)
Source: IAR