Title
Prevalence of plasmodium falciparum lacking histidine-rich proteins 2 and 3: A systematic review
Other title
Prevalencia del plasmodium falciparum que carece de las proteínas 2 y 3 ricas en histidina: Un análisis sistemático
Prévalence de plasmodium falciparum sans protéines 2 et 3 riches en histidine: Revue systématique
Date Issued
01 August 2020
Access level
open access
Resource Type
review
Author(s)
Publisher(s)
World Health Organization
Abstract
Objective To calculate prevalence estimates and evaluate the quality of studies reporting Plasmodium falciparum lacking histidine-rich proteins 2 and 3, to inform an international response plan. Methods We searched five online databases, without language restriction, for articles reporting original data on Plasmodium falciparum-infected patients with deletions of the pfhrp2 and/or pfhrp3 genes (pfhrp2/3). We calculated prevalence estimates of pfhrp2/3 deletions and mapped the data by country. The denominator was all P. falciparum-positive samples testing positive by microscopy and confirmed positive by species-specific polymerase chain reaction testing (PCR). If microscopy was not performed, we used the number of samples based on a different diagnostic method or PCR alone. We scored studies for risk of bias and the quality of laboratory methods using a standardized scoring system. Findings A total of 38 articles reporting 55 studies from 32 countries and one territory worldwide were included in the review. We found considerable heterogeneity in the populations studied, methods used and estimated prevalence of P. falciparum parasites with pfhrp2/3 deletions. The derived prevalence of pfhrp2 deletions ranged from 0% to 100%, including focal areas in South America and Africa. Only three studies (5%) fulfilled all seven criteria for study quality. Conclusion The lack of representative surveys or consistency in study design impairs evaluations of the risk of false-negative results in malaria diagnosis due to pfhrp2/3 deletions. Accurate mapping and strengthened monitoring of the prevalence of pfhrp2/3 deletions is needed, along with harmonized methods that facilitate comparisons across studies.
Start page
558
End page
568F
Volume
98
Issue
8
Language
English
OCDE Knowledge area
Enfermedades infecciosas
Medicina tropical
Scopus EID
2-s2.0-85089113824
PubMed ID
Source
Bulletin of the World Health Organization
ISSN of the container
00429686
Sponsor(s)
This review was funded by The Bill & Melinda Gates Foundation.
Sources of information:
Directorio de Producción Científica
Scopus