Before revision:  In this article, we consider a dynamical model and analyze the impact of some control measures that can lead to the reduction of exposed and infectious individuals of the transmission of COVID-19 . We investigate four control strategies diagnosis and spraying the environment to curb the transmission dynamics of the novel virus .
After revision:  In this article, we consider a dynamical model and analyze the impact of some control measures that can lead to the reduction of exposed and infectious individuals of the transmission of COVID-19 . We investigate three control strategies for this deadly infectious disease using personal protection, treatment with early diagnosis, treatment with delay diagnosis and spraying of virus in the environment as time-dependent control functions in our dynamical model to curb the transmission dynamics of the novel virus .