That being said, nations will not take the blanket approach of making a proof of vaccination record (POVR) the only way to enter the country. For example, with the U.S. tourism market being one of the largest in the world, developing countries wont be willing to eliminate half of Americans from being able to visit.
Countries that already have strict COVID-19 entry requirements in place will just add a POVR as another way to enter the country rather than eliminate other entry requirements such as PCR swab tests and quarantines.
Nations are going to need tourism dollars more than ever and making a POVR the only way to enter a country would further hurt already devastated tourism based economies.
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