Revellers celebrate the start of the Carnival season in Cologne, western Germany, on November 11, 2021. Due to the tense Corona situation, the city of Cologne has introduced the 2G rule at the Altstadt carnival hotspots. This means that only proven vaccinated and recovered people can celebrate at carnival events and parties in pubs and in the restricted zones in the old town. (Photo by Ina Fassbender/AFP Photo)
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