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Antibody-Dependent Enhancement of Severe Disease Is Mediated by Serum Viral Load in Pediatric Dengue Virus Infections
Journal article   Open access   Peer reviewed

Antibody-Dependent Enhancement of Severe Disease Is Mediated by Serum Viral Load in Pediatric Dengue Virus Infections

Jesse J Waggoner, Leah C Katzelnick, Raquel Burger-Calderon, Julia Gallini, Renee H Moore, Guillermina Kuan, Angel Balmaseda, Benjamin A Pinsky and Eva Harris
The Journal of infectious diseases, v 221(11), pp 1846-1854
11 May 2020
PMID: 32236481
url
https://doi.org/10.1093/infdis/jiz618View
Published, Version of Record (VoR)Open Access (License Unspecified) Open

Abstract

Antibodies, Viral - blood Antibody-Dependent Enhancement Child, Preschool Databases, Factual Dengue - blood Dengue Virus - immunology Enzyme-Linked Immunosorbent Assay Female Humans Male Nicaragua Prospective Studies Reverse Transcriptase Polymerase Chain Reaction Severity of Illness Index Viral Load
Low preexisting anti-dengue virus (DENV) antibody levels are associated with elevated disease severity. While antibody-dependent enhancement of dengue is thought to be driven by viral load, this has not been conclusively shown. We evaluated the association between preinfection anti-DENV antibody titers, viral load, and disease severity among 133 dengue cases in a Nicaraguan pediatric cohort study. Viral load was quantified in acute-phase serum by real-time reverse transcription polymerase chain reaction and analyzed in relation to preinfection antibody titer (measured by inhibition enzyme-linked immunosorbent assay) and dengue severity, categorized using 3 definitions. Higher viral load was significantly associated with dengue severity; for each increase of 1.0 log10 copies/mL, the odds of severe dengue increased approximately 50%, regardless of severity definition. Viral load at presentation and the odds of severe disease were highest among patients with low to intermediate preinfection antibody titers and lowest among those with the highest antibody titers. We showed the effect of preinfection antibody titer on disease severity was mediated by viral load for each of 3 dengue severity outcomes. This study demonstrates the association between preinfection anti-DENV antibody titer, serum viral load, and disease severity, and provides evidence for the mechanism of antibody-dependent enhancement in dengue cases.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Immunology
Infectious Diseases
Microbiology
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