Research Article
Comparison of the Hemagglutination Inhibition Test and IgG ELISA in Categorizing Primary and Secondary Dengue Infections Based on the Plaque Reduction Neutralization Test
Table 3
Percentage of cases classified in concordance with PRNT classification, using IgG ELISA, WHO HI criteria, or modified HI criteria.
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Primary infection if convalescent HI antibody titers are ā¤80 or if convalescent HI antibody titers are 160, 320, or 640 and HI antibody titers negative in acute specimen; primary infection if HI antibody titers are negative in acute specimen. |