Evaluating the different control policies for COVID-19 between mainland China and European countries by a mathematical model in the confirmed cases

Feng Lin; Yi Huang; Huifang Zhang; Xu He; Yonghua Yin; Jiaxin Liu

Comparing figure 1(a) with figure 1(b) , it implies that the close contacts are actually the susceptible population rather than the total population in China or in Hubei province. The transportation policies in China [10] [11] [12] [13] [14] [15] is proposed for controlling the outbreak of the disease. If some one was traveling by train as was diagnosed, all the people in that train should be confined in a isolated area. This means that all the people in that train were assumed to be susceptible one, while people who are not in that trip are not regarded as the close contacts. Other policies should also been taken into consideration, such as active cases were either quarantined or put under a form of self-quarantine at home [2] . The suspicious cases were also either quarantined or put under a form of self-quarantine [2] . The policies imply that the number of the susceptible population only depends on the cumulated number of the close contacts. fig. 1(a) ), the active cases ( fig. 1(b) ), the recovered cases ( fig. 1(b) ) and the death ( fig. 1(d) )