According to Civil Aviation Authority the number of travelers who will enter Greece without quarantine increases since the requirement is a negative test or a certificate of vaccination. Therefore, as of 19/4/2021, travelers from the European Union, United States, United Kingdom, United Arab Emirates, Serbia and Israel, will not be required to quarantine if they have a negative PCR test performed less than three days (72 hours) prior to their trip, or they have a vaccination certificate issued by a public authority in the English language, stating that 14 days have passed since the completion of their full vaccination for Covid-19.