Abstract
There has been some controversy about the evolutionary origin of Plasmodium vivax, particularly whether it is of Asian or African origin. Recently, a new malaria species which closely related to ape P. vivax was found in chimpanzees, in addition, the host switches of P. vivax from ape to human was confirmed. These findings support the African origin of P. vivax. Previous phylogenetic analyses have shown the position of P. vivax within the Asian primate malaria parasite clade. This suggested an Asian origin of P. vivax. Recent analyses using massive gene data, however, positioned P. vivax after the branching of the African Old World monkey parasite P. gonderi, and before the branching of the common ancestor of Asian primate malaria parasites. This position is consistent with an African origin of P. vivax. We here review the history of phylogenetic analyses on P. vivax, validate previous analyses, and finally present a definitive analysis using currently available data that indicate a tree in which P. vivax is positioned at the base of the Asian primate malaria parasite clade, and thus that is consistent with an African origin of P. vivax.
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