COVID-19 is the disease caused by the SARS-CoV-2 coronavirus. Globally, as of 6:32pm CEST, 19 September 2023, there have been 772 838 745 confirmed cases of COVID-19, including 6 988 679 deaths, reported to WHO. The number of confirmed cases still are being seen. In this paper, we present a prediction model baased on Ordinary Differential Equations. The prediction model takes the help fom the susceptible-exposed-infected-recovered (SEIR) family of compartmental models. The SEIR is a type of epidemiological models. In this paper we also focus on the reinfection rate among the people from the virus SARS-CoV-2 after they have recovered.