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The Coronavirus or Covid-19 is currently one of the most fearful pathogens in modern human history. It not only courses the loss of lives around the world but also the biggest economic losses in recent years. In order to tackle this crisis, the prediction of epidemic situation becomes crucial. The objective of this study is to use the Susceptible-Infectious-Recovered-Dead or SIR/D model to estimate the Covid-19 situation in Thailand. The required parameters of SIR/D model are analysed and estimated by using real data of Covid-19 in Thailand until 4 April 2020.
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