Seasonal variations in Plasmodium falciparum genetic diversity and multiplicity of infection in asymptomatic children living in southern Ghana

BMC Infectious Diseases
Joshua AdjahL E Amoah

Abstract

Genetic diversity in Plasmodium falciparum (P. falciparum) parasites is a major hurdle to the control of malaria. This study monitored changes in the genetic diversity and the multiplicity of P. falciparum parasite infection in asymptomatic children living in southern Ghana at 3 month intervals between April 2015 and January 2016. Filter paper blood spots (DBS) were collected quarterly from children living in Obom, a community with perennial malaria transmission and Abura, a community with seasonal malaria transmission. Genomic DNA was extracted from the DBS and used in polymerase chain reaction (PCR)-based genotyping of the merozoite surface protein 1 (msp 1) and merozoite surface protein 2 (msp 2) genes. Out of a total of 787 samples that were collected from the two study sites, 59.2% (466/787) tested positive for P. falciparum. The msp 1 and msp 2 genes were successfully amplified from 73.8% (344/466) and 82.5% (385/466) of the P. falciparum positive samples respectively. The geometric mean MOI in Abura ranged between 1.17 (95% CI: 1.08-1.28) and 1.48 (95% CI: 1.36-1.60) and was significantly lower (p < 0.01, Dunn's multiple comparison test) than that determined in Obom, where the geometric mean MOI ranged between 1.82 (95% ...Continue Reading

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Citations

Dec 8, 2020·Frontiers in Microbiology·Augustina FrimpongKwadwo Asamoah Kusi

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Methods Mentioned

BETA
PCR
genotyping
electrophoresis
enhanced
gel
blood
genotying

Software Mentioned

Abura
Obom
R3
GraphPad Prism

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