Travelers May Need Vaccine Boosters To Visit Certain European Countries

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European Union flag over a map of the region.

Two European Union (E.U.) member nations, Austria and Croatia, have instituted new rules for international travelers, placing an ‘expiry date’ on visitors’ COVID-19 vaccination status.

The E.U. had broadly lifted travel restrictions on travelers coming from the U.S. back in June, although each of its 27 member countries is allowed to dictate its own particular conditions for entry (e.g., testing, vaccination or quarantine requirements).

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