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Demonstrators gather to protest against COVID-19 restrictions and vaccine mandates in Kyiv, Ukraine, Wednesday, Nov. 3, 2021. In a bid to stem contagion, Ukrainian authorities have required teachers, government employees and other workers to get fully vaccinated by Nov. 8 or face having their salary payments suspended. In addition, proof of vaccination or a negative test is now required to board planes, trains and long-distance buses. (AP Photo/Efrem Lukatsky)