(Updated July 12th, 2023)
Given the expiry of COVID-specific special legislation on July 1st, 2023 and the associated end to the last few remaining official COVID-specific restrictions, I am closing down this page until further notice.
Most measures were lifted well before this date, of course. Note that vulnerable settings such as medical facilities may still have their own in-house rules related to infection prevention, of course.
For the future, check your government’s advisory pages for international travel, especially regarding your own country’s requirements when returning from abroad.