Spreading from Hot Foci of COVID‑19 to another Country: Observation from Thailand on Disease Importation by Foreigner

COVID‑19 is an important new disease. It firstly appeared in China and spread to more than 60 countries at present (9th March 2020).[1] The dynamicity of disease spreading is very interesting in clinical epidemiology. Thailand is a country in Southeast Asia and it is the second country that the disease existed in.[2] Until present, there are 50 accumulated cases in Thailand and there are still continuous importations of disease from countries with outbreak to Thailand. Of those 50 cases, there are many importations by foreigners from main hot foci of COVID‑19, either China in Asia and Italy in Europe.[