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A Simple Flow Cytometry Based Assay to Determine In Vitro Antibody Dependent Enhancement of Dengue Virus Using Zika Virus Convalescent Serum
Published on: April 10, 2018
Anti-Dengue Virus Antibody Avidity Correlates With Protection Against Symptomatic Dengue Virus Infection
Isamu Tsuji1, David Dominguez1, Jonathan Hernandez1
1Vaccines Business Unit, Takeda Pharmaceuticals, Inc, Cambridge, Massachusetts, USA.
Abstract:
Antibody avidity is indicative of antibody affinity maturation following virus infection or vaccination. To determine correlation between preexisting anti-dengue virus (DENV) antibody avidity and secondary DENV exposure outcomes, we assessed anti-DENV antibody avidity, represented as avidity index (antibody response/dissociation rate) in sera of Nicaraguan Pediatric Dengue Cohort Study participants prior to symptomatic or inapparent secondary DENV infections. The avidity index was significantly higher in participants who subsequently developed inapparent versus symptomatic infections. Risk factor analysis suggested that odds of inapparent DENV infection increase as avidity index increases. Antibody avidity index is an important parameter for characterizing protective DENV immune responses.
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01:41Affinity and Avidity
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