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Am J Trop Med Hyg. 2010 Jun;82(6):1030-3. doi: 10.4269/ajtmh.2010.09-0665.

Molecular-based assay for simultaneous detection of four Plasmodium spp. and Wuchereria bancrofti infections.

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  • 1Center for Global Health and Diseases, Case Western Reserve University School of Medicine, Cleveland, OH, USA.


Four major malaria-causing Plasmodium spp. and lymphatic filariasis-causing Wuchereria bancrofti are co-endemic in many tropical and sub-tropical regions. Among molecular diagnostic assays, multiplex polymerase chain reaction (PCR)-based assays for the simultaneous detection of DNAs from these parasite species are currently available only for P. falciparum and W. bancrofti or P. vivax and W. bancrofti. Using a post-PCR oligonucleotide ligation detection reaction-fluorescent microsphere assay (LDR-FMA), we developed a multiplex assay that has the capability to simultaneously detect all four Plasmodium spp. and W. bancrofti infections in blood samples. Compared with microfilarial positivity in the blood, the LDR-FMA assay is highly concordant (91%), sensitive (86%), and specific (94%), and has high reproducibility for Plasmodium spp. (85-93%) and W. bancrofti (90%) diagnoses. The development of this assay for the simultaneous diagnosis of multiple parasitic infections enables efficient screening of large numbers of human blood and mosquito samples from co-endemic areas.

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