The introduction of COVID-19 vaccines in December 2020 raised hopes that vaccine passes could help accelerate the recovery of the travel and tourism sector.
By Matthias Helble and Won Hee Cho May 15, 2021
VOL. 16, No. 15, March.24, 2023 (Chaitra 10. 2079) Publisher and Editor: Keshab Prasad Poudel Online Register Number: DOI 584/074-75
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