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A Point Mutation In Codon 76 Of Pfcrt Of P. Falciparum Is Positively Selected For By Chloroquine Treatment In Tanzania, A.G. Schneider, Zul Premji, I. Felger, T. Smith, S. Abdulla, H.-P. Beck, H. Mshinda
A Point Mutation In Codon 76 Of Pfcrt Of P. Falciparum Is Positively Selected For By Chloroquine Treatment In Tanzania, A.G. Schneider, Zul Premji, I. Felger, T. Smith, S. Abdulla, H.-P. Beck, H. Mshinda
Pathology, East Africa
This study was undertaken to validate the relevance of Chloroquine (CQ) resistance markers pfert76 and pfmdrl86 in an endemic area in Tanzania. After treatment with CQ, recrudescence was distinguished from new infection by msp2 genotyping, and the number of concurrent infection was also determined. The rate of children with recrudescent parasites at day 7 and/or day 14 amounted to a parasitological failure rate of 22.4% using PCR. The mean multiplicity of infection at day 0 was 3.2 (n = 71). The allelic frequencies of the mutated pfert76 and pfmdrl86 were estimated to be 92 and 77%, respectively. Both values exceeded …