Research Article
Modelling the Periodic Outbreak of Measles in Mainland China
Figure 2
Fitting to reported measles cases from 2013 to 2016. The initial values are (S(0), V1(0), V2(0), E(0), (0), I(0), (0), R(0)) = (1.1439 × 109, 9.9395 × 107, 3.23 × 107, 599, 1851, 300, 7316, 3.2652 × 107).