Figure 1.

The distribution of Plasmodium vivax dhfr haplotypes at c57 (F->L), 58 (S->R), 61 (T) and 117 (S->N) in samples collected from P. vivax positive patients in 9 districts of Sri Lanka. The number in brackets is the actual number of P. vivax positive cases reported by Anti Malaria Campaign of Sri Lanka in the study period September 2004–March 2006. In red: the wild type to mutant type change in amino acids