When i went through the immigration, I wasn't asked about any COVID test or show a prove that i took one already.
Didn't see a place for it, sorry
Didn't see any checkpoint for covid testing.
Wasn't asked for any vax proof or covid testing for a domestic flight. International flights are dependent on the country of destination. Most requires a negative test within 3 days or so.
I don't remember seeing anything about that, last time I passed thru. You may want to get one before you go to the airport instead.
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