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Fig. 5 | Malaria Journal

Fig. 5

From: Changing epidemiology and challenges of malaria in China towards elimination

Fig. 5

Trend of imported Plasmodium malaria cases by origins and species, 2011–2016. a P. falciparum imported from Africa. b P. vivax imported from Africa. c P. falciparum imported from Southeast Asia. d P. vivax imported from Southeast Asia. The seasonality of imported cases was fitted by nonlinear regression with cosine function proposed in a previous study [32], and a linear regression model for the annual trend was fit with the equations provided

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