Of the new cases confirmed on Monday, 145 were in the central region of Mazowieckie, which includes the national capital Warsaw.
Meanwhile, 128 new infections were reported in the densely populated southern coal-mining region of Silesia.
The southwestern province of Dolnośląskie, which is home to the major city of Wrocław, had the third-highest number of new infections confirmed by officials on Monday, at 113.
The latest deaths in Poland’s coronavirus outbreak are seven people with pre-existing medical conditions and four who died directly because of COVID-19, the Polish health ministry said.
On Sunday, Poland confirmed 55 deaths and 2,167 new coronavirus infections nationwide, compared with 298 deaths and 2,896 fresh cases a day earlier.
On April 8, the country reported its highest daily toll of 954 deaths related to the coronavirus.
On April 1, the Polish health ministry confirmed 35,251 new single-day cases, the most since the pandemic hit the country more than a year ago.
Poland's first case of coronavirus infection was reported on March 4, 2020.
11,604 in hospitals, 100,096 quarantined
The health ministry announced on Monday morning that 11,604 COVID-19 patients were in hospitals nationwide, 1,572 of them on ventilators, with a further 100,096 people quarantined for possible coronavirus exposure.
Meanwhile, 2,605,703 people have now recovered from COVID-19 throughout the country, including 4,729 over the last 24 hours, the health ministry also said.
Source: IAR, PAP