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Reactivity of nonstructural protein 1 antigens to ZIKV and DENV plasma in study of Zika diagnosis, Singapore. H-zMut2 ELISA was tested with a training set for binding to IgM (A) and IgG (B). Results are representative of replicates for each sample. Normalized OD >1.5 for plasma or serum sample was determined as positive for ZIKV infection. DENV, dengue virus; OD, optical density; ZIKA, Zika virus.
