ArticleMalaria journal2024
Two decades of molecular surveillance in Senegal reveal rapid changes in known drug resistance mutations over time.
Article in Malaria journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it.
- The Global Landscape ofPathogens (Basel, Switzerland) · 2026Pooled it
- Building the toolkit to address malaria resurgence and radical cure of vivax malaria in Ethiopia: a meeting report.Malaria journal · 2026Article
- Emergence of Plasmodium falciparum pfdhps A581G mutation in Southern Senegal under Seasonal Malaria Chemoprevention pressure, 2020-2023.Communications medicine · 2026Article
- Two Mosquito Salivary Antigens Demonstrate Promise as Biomarkers of Recent Exposure to Plasmodium falciparum-Infected Mosquito Bites.The Journal of infectious diseases · 2025Article
- Monitoring molecular markers associated with antimalarial drug resistance in south-east Senegal from 2021 to 2023.The Journal of antimicrobial chemotherapy · 2025Article
- Structure-Based Discovery and Development of Highly Potent Dihydroorotate Dehydrogenase Inhibitors for Malaria Chemoprevention.Journal of medicinal chemistry · 2025Article
- Impact of seasonal malaria chemoprevention timing on clinical malaria incidence dynamics in the Kedougou region, Senegal.PLOS global public health · 2025Article
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Abstract
backgroundDrug resistance in Plasmodium falciparum is a major threat to malaria control efforts. Pathogen genomic surveillance could be invaluable for monitoring current and emerging parasite drug resistance.
methodsData from two decades (2000-2020) of continuous molecular surveillance of P. falciparum parasites from Senegal were retrospectively examined to assess historical changes in malaria drug resistance mutations. Several known drug resistance markers and their surrounding haplotypes were profiled using a combination of single nucleotide polymorphism (SNP) molecular surveillance and whole genome sequence based population genomics.
resultsThis dataset was used to track temporal changes in drug resistance markers whose timing correspond to historically significant events such as the withdrawal of chloroquine (CQ) and the introduction of sulfadoxine-pyrimethamine (SP) in 2003. Changes in the mutation frequency at Pfcrt K76T and Pfdhps A437G coinciding with the 2014 introduction of seasonal malaria chemoprevention (SMC) in Senegal were observed. In 2014, the frequency of Pfcrt K76T increased while the frequency of Pfdhps A437G declined. Haplotype-based analyses of Pfcrt K76T showed that this rapid increase was due to a recent selective sweep that started after 2014. DISCUSSION (CONCLUSION): The rapid increase in Pfcrt K76T is troubling and could be a sign of emerging amodiaquine (AQ) resistance in Senegal. Emerging AQ resistance may threaten the future clinical efficacy of artesunate-amodiaquine (ASAQ) and AQ-dependent SMC chemoprevention. These results highlight the potential of molecular surveillance for detecting rapid changes in parasite populations and stress the need to monitor the effectiveness of AQ as a partner drug for artemisinin-based combination therapy (ACT) and for chemoprevention.
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