COVID-19 policies: Analysis and implication

Since the spread of Coronavirus disease 2019 from China to different parts of the world, every country’s government has tried their best in conducting policies to protect their people and their economy. Their approaches can be generally classified into three types, moderatism represented by Singapore, conservatism represented by China and liberalism represented by the United States. To investigate the effectiveness of these measures, the data about the economy (in particular the Gross Domestic Product) as well as about the coronavirus (in particular the fatality rate and the number of confirmed cases) is studied and analysed. The relationship between GDP and the number of confirmed cases can be deducted. The development of the virus against time can be simulated and discussed. The results and further discussions can be helpful in clearing the pandemic from the Earth especially from less developed countries and in better preparing us when facing future possible pandemics.