31 January 2022. All 25,000 Suvarnabhumi airport staff are expected to get their fourth Covid-19 vaccine shots by the end of next month as Thailand resumes its “Test & Go” quarantine waiver scheme for inoculated travellers on Feb 1, 2022.https://www.bangkokpost.com/thailand/general/2255987/airport-staff-to-get-fourth-shot-as-test-go-resumes