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Incidence of malaria in China, 1950–2017. The different control and elimination phases are shown in different colours. a Transmission not known (1949–1959); b outbreak and pandemic transmission (1960–1979); c decline with sporadic distribution (1980–1999); d low transmission with re-emergence in central China (2000–2009); and e the elimination phase (2010–2020). The indigenous and imported cases from 2002 to 2017 are shown in the right-hand column
