Travelers are welcome in Europe for the 2021 summer if they are vaccinated with any of the vaccines approved by the European Medicines Agency (EMA) at least two weeks before departure or if they prove to be Covid free with a negative test taken within 72 hours prior to departure. However, some travelers from high-risk countries, like India or Brazil, might have difficulty entering Europe, depending on the country. To check the entry situation in each one of the European countries, go to the Re-open EU website.