Geographic distribution of dhfr and dhps genotypes, 1990s.

This figure shows the sites examined during the 1990s, noted with red stars, for dhfr. All sites were fixed for the 437G/540E/581G dhps allele, with the exception of one isolate in Itaituba carrying 437G/581G, and therefore these pie charts were omitted The color coding for dhfr appears in the bottom of the map. The data provided for Peixoto de Azevedo, noted by the blue star came from the work of others [45].