People walk along La Rambla in downtown Barcelona, Spain, Thursday, December 23, 2021. Spain is reporting almost 700 cases per 100,000 inhabitants over 14 days, more than double the accumulated cases before last year's Christmas holidays. The omicron strain has soared from 5% of new cases in Spain to 47% within one week. (Photo by Emilio Morenatti/AP Photo)
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