First, this is not totally accurate -- you can board flights with literally no proof of anything, and international travel often does permit an affidavit of pri

First, this is not totally accurate -- you can board flights with literally no proof of anything, and international travel often does permit an affidavit of prior infection. Second, just get a vaccine, jfc. Been infected? Great, now you're even more immune. Do one easy thing for your fellow humans. Can't? Plenty of documentable, obtainable exceptions. Won't? Fine. Don't avail yourself of the luxuries which are the result of humans working together to build something. Easy.