Some countries allow travelers who have been fully vaccinated against Covid-19 to enter the country without having to quarantine.
Usually, this requires showing official proof of your vaccination status. However, the requirements are different for each country and can change on short notice, so before you travel, please make sure you review the requirements of any country you will travel through.
You may still need to provide proof of a negative Covid test as well, regardless of your vaccination status, so please make sure you can give this as well if required.
The links below have information on each countries' Covid travel restrictions and entry requirements.