Performance Evaluation of Malaria Plus Rapid Diagnostic Tests (RDTs) for the Detection of Plasmodium Infections in Patients With Symptoms Suggestive of Malaria

Performance Evaluation of Malaria Plus Rapid Diagnostic Tests (RDTs) for the Detection of Plasmodium Infections in Patients With Symptoms Suggestive of Malaria

Multi-site, Prospective, Clinical Performance Evaluation of NxTekTM Malaria Pf Plus Rapid Diagnostic Test Device and NxTekTM Malaria Pf/Pv Plus Rapid Diagnostic Test (RDT) Device for the Detection of Plasmodium Infections in Patients With Symptoms Suggestive of Malaria

This trial is part of a portfolio of studies designed to assess the clinical and operational performance of Abbott's NxTekTM Malaria Pf Plus and NxTekTM Malaria Pf/Pv Plus Rapid Test Devices.

A prospective cross-sectional multi-center diagnostic accuracy trial in intended-use settings of the: NxTekTM Malaria Pf/Pv Plus Rapid Test Device for the qualitative detection histidine-rich protein II (HRP-II antigens) and pLDH of Plasmodium falciparum (P.f) and Plasmodium vivax (P.v) malaria in human whole blood. NxTekTM Malaria Pf PlusRapid Test Device for the qualitative detection of histidine-rich protein II (HRP-II antigens) and pLDH of Plasmodium falciparum (P.f) malaria in human whole blood.

The staff conducting the trial assays will be blinded to any results already available from the investigational, comparator or reference test. All RDTs will be read by two blinded operators, with a third operator for discrepant results

NxTekTM Malaria Pf/Pv Plus: A sensitive rapid chromatographic immunoassay for the qualitative detection of histidine-rich protein 2 (HRP2) and Plasmodium lactate dehydrogenase (pLDH) of Plasmodium falciparum(P.f.) on one test line and of pLDH of Plasmodium vivax (P.v.) malaria on a second test line in human whole blood. This test is a lateral flow test for in vitro professional diagnostic use and intended as an aid to early diagnosis of Malaria infection in-patients with clinical symptoms. NxTekTM Malaria Pf Plus: A sensitive rapid chromatographic immunoassay for the qualitative detection of histidine-rich protein 2 (HRP2) and pLDH on a single test line of Plasmodium falciparum(P.f.) malaria in human whole blood. This test is a lateral flow test for in vitro professional diagnostic use and intended as an aid to early diagnosis of Malaria infection in-patients with clinical symptoms.

Assess the sensitivity, specificity, positive and negative predicting values (PPV and NPV) [altogether referred to hereafter as "diagnostic accuracy"] of NxTekTM Malaria Pf Plus

To assess the sensitivity, specificity, positive and negative predicting values (PPV and NPV) [altogether referred to hereafter as "diagnostic accuracy"] of NxTekTM Malaria Pf Plus in intended use settings for detecting P.f. infections in capillary whole blood samples collected prospectively from patients with symptoms suggestive of malaria (e.g. febrile).

To assess the diagnostic accuracy of NxTekTM Malaria Pf/Pv Plus in intended use settings for detecting P.f. and P.v. infections in capillary whole blood samples collected prospectively from patients with symptoms suggestive of malaria (e.g. febrile).

Estimates of diagnostic accuracy characteristics with 95% confidence intervals of comparator tests (05FK50, 05FK80, 05FK120, LM)

Estimates of diagnostic accuracy characteristics with 95% confidence intervals of comparator tests (05FK50, 05FK80, 05FK120, LM), using the reference test as standard of truth for the detection of P. falciparum and, when relevant, P.v. infections in patients with symptoms suggestive of malaria

Estimates of diagnostic accuracy characteristics with 95% confidence intervals ofthe index tests for the detection of P.f.infections with hrp2 and/or hrp3 deletions

Estimates of diagnostic accuracy characteristics with 95% confidence intervals of the index tests for the detection of P.f. infections with hrp2 and/or hrp3 deletions in patients with symptoms suggestive of malaria

Inclusion Criteria: Aged 5years old or older Presenting at the trial site with fever or a history of fever (axillary temp ≥ 37.5C) during the preceding 48hours Freely agreeing to participate by providing informed consent (and assent, if applicable) Exclusion Criteria: Presence of symptoms and signs of severe illness and/or central nervous system infections as defined by WHO guidelines.

Medical Parasitology Research Unit, Aklilu Lemma Institute of Pathobiology (ALIPB), Addis Ababa University (AAU).