 Since the emergence of the first cases in Wuhan, China, the novel coronavirus, 2019 and COVID, infection has been quickly spreading out to other provinces and neighboring countries. Estimation of the basic reproduction number by means of mathematical modeling can be helpful for determining the potential and severity of an outbreak. Sensitivity analyses show that interventions, such as intensive contact tracing followed by quarantine and isolation, can effectively reduce the control reproduction number. This article was authored by Biao Tang, Xiao Wang, Chen Li, and others.