Special travel rights for Covid-19 vaccinated people?

I would like an essay that discusses how vaccination passports can affect international travel (also related to the hospitality industry). Should there be benefits for vaccinated people? How does it look from an economic point of view? Are such special privileges justifiable from an ethical point of view? The body of the text should consist of a discussion of pro and contra arguments. In the summary, the position in favor of vaccination certificates should be taken.
A minimum of 5 academic sources should be used. They must all be peer-reviewed and no older than 3 years. Furthermore, they should only come from Google Scholar or another platform, but only I have access to this platform. If I find suitable articles on this platform, I will submit them.
No appendix needed.