Phylogenetic tree based on a short segment of 18S rRNA gene sequences of Plasmodium spp. isolates. Isolate MAL-1 (accession number KF192072) and isolate MAL-2 (accession number KF192073) in this report clustered with P. ovale curtisi isolates, clearly indicating that these two cases were caused by P. ovale curtisi. The tree is constructed using the Neighbor-Joining method (bootstrap = 1000). GenBank accession number is given after each isolate’s name. The 18S rRNA gene sequences of P.falciparum isolate (GenBank accession number M19172) was used as outgroup.