Performance evaluation of the highly sensitive histidine-rich protein 2 rapid test for plasmodium falciparum malaria in North-West Tanzania

Autor: Eric Lyimo, Paul Kazyoba, Donald Miyaye, John Changalucha, Lucas E. Matemba, Alphaxard Manjurano, Justin J. Omolo, Julius J. Massaga, Coleman Kishamawe
Rok vydání: 2020
Předmět:
Male
Protozoan Proteins
Polymerase Chain Reaction
Tanzania
SD Bioline Pf
0302 clinical medicine
Sensitivity
Prevalence
030212 general & internal medicine
Malaria
Falciparum
Pathology
Molecular
Child
Microscopy
biology
Infectious Diseases
Specificity
Female
Adult
medicine.medical_specialty
HSPF
lcsh:Arctic medicine. Tropical medicine
Adolescent
lcsh:RC955-962
030231 tropical medicine
Plasmodium falciparum
Antigens
Protozoan
Sensitivity and Specificity
lcsh:Infectious and parasitic diseases
03 medical and health sciences
Young Adult
Predictive Value of Tests
Internal medicine
parasitic diseases
medicine
Humans
lcsh:RC109-216
HSPf
business.industry
Research
Reproducibility of Results
Gold standard (test)
medicine.disease
biology.organism_classification
equipment and supplies
Highly sensitive
Cross-Sectional Studies
Parasitology
North west
business
Malaria
Zdroj: Malaria Journal
Malaria Journal, Vol 20, Iss 1, Pp 1-9 (2021)
ISSN: 1475-2875
Popis: Background Precise detection of Plasmodium infections in community surveys is essential for effective malaria control. Microscopy and rapid diagnostic tests (RDTs) are the major techniques used to identify malaria infections in the field-based surveys. Although microscopy is still considered as the gold standard, RDTs are increasingly becoming versatile due to their rapid and adequate performance characteristics. Methods A malaria prevalence cross-sectional survey was carried out in north-western Tanzania in 2016, aimed at appraising the performance of high sensitivity Plasmodium falciparum (HSPf) tests compared to SD Bioline Pf and microscopy in detecting P. falciparum infections. A total of 397 individuals aged five years and above were tested for P. falciparum infections. The sensitivity, specificity, positive, and negative predictive values (PPV and NPV) of microscopy, Pf RDT and HSPf RDT was determined using PCR as the gold standard method. Results The prevalence of P. falciparum infections determined by microscopy, SD Bioline Pf, HSPf and PCR was 21.9, 27.7, 33.3 and 43.2%, respectively. The new HSPf RDT had significantly higher sensitivity (98.2%) and specificity (91.6%) compared to the routinely used SD Bioline Pf RDT(P Conclusions HSPf RDT had better performance when compared to both microscopy and the currently used malaria RDTs. The false negativity could be associated with the low parasite density of the samples. False positivity may be related to the limitations of the expertise of microscopists or persistent antigenicity from previous infections in the case of RDTs. Nevertheless, HS PfRDT performed better compared to routinely used Pf RDT, and microscopy in detecting malaria infections. Therefore, HS Pf RDT presents the best alternative to the existing commercial/regularly available RDTs due to its sensitivity and specificity, and reliability in diagnosing malaria infections.
Databáze: OpenAIRE
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