ArticleAntimicrobial agents and chemotherapy2012
Various pfcrt and pfmdr1 genotypes of Plasmodium falciparum cocirculate with P. malariae, P. ovale spp., and P. vivax in northern Angola.
Article in Antimicrobial agents and chemotherapy, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 5 of them syntheses that pooled it.
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Who cites it
50 citing papers in PubMed, 5 syntheses or guidelines pooled it.
- Plasmodium falciparum antimalarial resistance in Angola: a systematic review.Malaria journal · 2026Pooled it
- Global trend of Plasmodium malariae and Plasmodium ovale spp. malaria infections in the last two decades (2000-2020): a systematic review and meta-analysis.Parasites & vectors · 2021Pooled it
- Comparison of Plasmodium ovale curtisi and Plasmodium ovale wallikeri infections by a meta-analysis approach.Scientific reports · 2021Pooled it
- A systematic review of sub-microscopic Plasmodium vivax infection.Malaria journal · 2015Pooled it
- Systematic review of sub-microscopic P. vivax infections: prevalence and determining factors.PLoS neglected tropical diseases · 2015Pooled it
- Effectiveness of Nutrition and WASH/malaria educational community-based interventions in reducing anemia in children from Angola.Scientific reports · 2021Trial
- Spatial and temporal description of antimalarial drug resistance markers in Ghana using targeted amplicon deep sequencing.Antimicrobial agents and chemotherapy · 2026Article
- Molecular markers of antimalarial drug resistance in pfk13, pfmdr1, pfdhfr, and pfdhps genes of Plasmodium falciparum in a rural municipality in Cubal, Benguela Province, Angola (2022-2023).Malaria journal · 2026Article
- Seasonal Variation and Interspecies Dynamics Among Plasmodium falciparum and ovale Species in Bagamoyo, Tanzania.The Journal of infectious diseases · 2026Article
- Analysis of pfhrp2 and pfhrp3 gene deletions, and the structure and variability of PfHRP2 and PfHRP3 proteins: implications for the performance of malaria rapid diagnostic tests in Cubal, Angola.Malaria journal · 2025Article
- Characterization ofInsects · 2025Article
- Geographical Heterogeneity in Antimalarial Resistance Markers Revealed by Genomic Surveillance in Angola, 2023.medRxiv : the preprint server for health sciences · 2025Article
- Seasonal variation and interspecies dynamics amongmedRxiv : the preprint server for health sciences · 2025Article
- Real-time PCR for malaria diagnosis and identification of Plasmodium species in febrile patients in Cubal, Angola.Parasites & vectors · 2024Article
- The temporal dynamics of Plasmodium species infection after artemisinin-based combination therapy (ACT) among asymptomatic children in the Hohoe municipality, Ghana.Malaria journal · 2023Article
- The primate malaria parasites Plasmodium malariae, Plasmodium brasilianum and Plasmodium ovale spp.: genomic insights into distribution, dispersal and host transitions.Malaria journal · 2022Review
- Article
- Missed Plasmodium falciparum and Plasmodium vivax Mixed Infections in Ethiopia Threaten Malaria Elimination.The American journal of tropical medicine and hygiene · 2021Article
- Epidemiological, Physiological and Diagnostic Comparison ofDiagnostics (Basel, Switzerland) · 2021Review
- Malaria parasite species composition of Plasmodium infections among asymptomatic and symptomatic school-age children in rural and urban areas of Kinshasa, Democratic Republic of Congo.Malaria journal · 2021Article
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Abstract
Artemisinin-based combination therapy for malaria has become widely available across Africa. Populations of Plasmodium falciparum that were previously dominated by chloroquine (CQ)-resistant genotypes are now under different drug selection pressures. P. malariae, P. ovale curtisi, and P. ovale wallikeri are sympatric with P. falciparum across the continent and are frequently present as coinfections. The prevalence of human Plasmodium species was determined by PCR using DNA from blood spots collected during a cross-sectional survey in northern Angola. P. falciparum was genotyped at resistance-associated loci in pfcrt and pfmdr1 by real-time PCR or by direct sequencing of amplicons. Of the 3,316 samples collected, 541 (16.3%) contained Plasmodium species infections; 477 (88.2%) of these were P. falciparum alone, 6.5% were P. falciparum and P. malariae together, and 1.1% were P. vivax alone. The majority of the remainder (3.7%) harbored P. ovale curtisi or P. ovale wallikeri alone or in combination with other species. Of 430 P. falciparum isolates genotyped for pfcrt, 61.6% carried the wild-type allele CVMNK at codons 72 to 76, either alone or in combination with the resistant allele CVIET. No other pfcrt allele was found. Wild-type alleles dominated at codons 86, 184, 1034, 1042, and 1246 of the pfmdr1 locus among the sequenced isolates. In contrast to previous studies, P. falciparum in the study area comprises an approximately equal mix of genotypes associated with CQ sensitivity and with CQ resistance, suggesting either lower drug pressure due to poor access to treatment in rural areas or a rapid impact of the policy change away from the use of standard monotherapies.
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