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Item Open Access Mathematical modelling to assess the impacts of cross-border travel controls of Covid-19 pandemic in Thailand(Mahidol University, 2023) Vidhyakorn Mahd-Adam; Wirichada Pan-ngum; Chawarat Rotejanaprasert; Panithee ThammawijayaFour components of intervention strategies related to Thailand’s cross-border travel control are (1) assessing risk of infection from departure country, (2) pre-departure screening and requiring of vaccination certificate, (3) point of entry... on January 9th, 2022, this research study applied cluster analysis to derive three distinct groups of countries based on vaccination coverage, infection rates and test positivity. For modelling, 863 imported cases per 10 5 travelers per week were estimated