Fig. 5

hrp2 PCR for P. falciparum isolates with false-negative HRP2 RDTs. Of the 138 P. falciparum samples with false-negative HRP2 RDTs, 106 were positive by PCR for the P. falciparum hrp2 gene (light blue bars) and 32 were negative by PCR for the central repeat region of the hrp2 gene (black bars). In Kibirizi, improved malaria control was not associated with an increased frequency of false-negative RDTs due to hrp2-negative P. falciparum isolates