WHICH MALARIA RAPID TEST FOR MADAGASCAR? FIELD AND LABORATORY EVALUATION OF THREE TESTS AND EXPERT MICROSCOPY OF SAMPLES FROM SUSPECTED MALARIA PATIENTS IN MADAGASCAR

ARSÈNE RATSIMBASOA Epidemiology Unit, and Malaria Unit Research, Institut Pasteur de Madagascar, Antananarivo, Madagascar

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ARTHUR RANDRIAMANANTENA Epidemiology Unit, and Malaria Unit Research, Institut Pasteur de Madagascar, Antananarivo, Madagascar

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ROGELIN RAHERINJAFY Epidemiology Unit, and Malaria Unit Research, Institut Pasteur de Madagascar, Antananarivo, Madagascar

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NOÉLINE RASOARILALAO Epidemiology Unit, and Malaria Unit Research, Institut Pasteur de Madagascar, Antananarivo, Madagascar

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DIDIER MÉNARD Epidemiology Unit, and Malaria Unit Research, Institut Pasteur de Madagascar, Antananarivo, Madagascar

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Field and laboratory studies were carried out in October and November 2005 to provide a comparative evaluation of the performance of three rapid malaria detection tests, two of which were recently introduced (the CareStart™ Malaria test and the SD Malaria Antigen Bioline™ test) and the well-known OptiMAL-IT™ test. Compared with microscopy, the sensitivity of the three tests to detect Plasmodium falciparum malaria was 97% for the CareStart™ Malaria test, 89.4% for the SD Malaria Antigen Bioline™ test, and 92.6% for the OptiMAL-IT™ test. The three tests were less sensitive in detecting non-P. falciparum infections, and the sensitivity decreased at levels of parasitemia ≤ 500 parasites/μL for P. falciparum and ≤ 5,000 parasites/μL for other Plasmodium spp. On the basis of World Health Organization recommendations, only the CareStart™ Malaria test and the OptiMAL-IT™ test had sensitivities greater than 95% for samples with parasitemias ≥ 100 parasites/μL.

Author Notes

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