“…In so doing, additional model predictors may include potential travelers’ vaccine status, perceptions of vaccination, age, response efforts of transportation corporations, availability of health care, established restrictions, number of those infected with COVID-19 within the destination, etc. Others have offered these constructs as viable predictors within their works (see Chua et al, 2020; Parady et al, 2020; Shamshiripour et al, 2020; Zhang and Lu, 2021).…”