Vaccine passports for COVID are a pretty different situation. It's not "get this established and well-tested vaccine so that you can go on a safari adventure in

Vaccine passports for COVID are a pretty different situation. It's not "get this established and well-tested vaccine so that you can go on a safari adventure in Africa," it's "get this very new vaccine that you might have read horrible conspiracies about on the internet so that you can go back to eating at restaurants and attending sporting events." The incentive to forge proof of a COVID vaccine is way higher, and in some jurisdictions there may even be political and/or media cover for doing so (because it's about your "freedom").