FILE - In this Saturday, March 20, 2021 file photo, few people walk on the streets after Poland reintroduced a partial nationwide lockdown on Saturday to curb a sudden spike in new COVID-19 cases, in Warsaw, Poland. Many regions in Central Europe and the Balkans are facing one of the most difficult moments since the coronavirus pandemic struck over a year ago. Poland recorded its highest daily number of new coronavirus infections Wednesday March 24, 2021, as hospitals buckled under a new surge. (AP Photo/Czarek Sokolowski, File)
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