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Like a memory of the end of 2021. At the time, countries around the world closed their borders to travelers from South Africa, where the Omicron variant had just been identified. A few days before New Year’s Eve, several countries are tightening the rules vis-à-vis China this time. In question ? The massive epidemic wave in the most populous state in the world, amplified by Beijing’s abandonment of the strict “Zero Covid” policy. And in particular the fear of seeing people contaminated by a variant little in circulation, even unknown, disembark.