Apparently on passengers from some of the most corrupt nations on earth that were; 1. Fully vaccinated, 2. Negative on a test run 72 hours before departure. 3. Never were close enough in Doha to catch it from other passengers or staff. So honestly, maybe they were vaxed, maybe not, who knows.
But we do know that delta got in on Aircrew from the States that we don't know if they were fully vaccinated, but definitely spread from Hoxton park by unvaccinated guests.
