“…A central planner cares about the welfare of the whole population such as the number of infected individuals in the entire population, the well-being of the economy [12,13,25,27,28,54,57,66,73,75,81,82,87,97,98,103,107,108,112,122,136,[139][140][141][142]144,146,148]. Individuals concern about their own interests, which include his/her own infection risk, the inconvenience of wearing a mask, and the monetary cost of getting an effective treatment [2,13,16,21,27,30,35,36,50,56,59,65,66,114,127,129,130,145].…”