2020
DOI: 10.1172/jci.insight.133653
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Reciprocal immune enhancement of dengue and Zika virus infection in human skin

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Cited by 24 publications
(19 citation statements)
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“…23 Respiratory viruses typically follow this pattern of higher inoculum leading to a higher probability of infection in human challenge experiments, including influenza viruses, rhinovirus, and respiratory syncytial virus, [7][8][9][10]12 although there are exceptions, given the complexity of the pathogen-host interaction. [24][25][26] In addition, the dose needed to infect 50% of the human population (human infectious dose, HID 50 ) varies between pathogens and their subtypes or strains, which has been documented for influenza viruses, rhinovirus, and others. 21 The influence of the inoculum on disease severity is more challenging to study in humans, given that some Personal View viruses only cause mild clinical manifestations in immunocompetent human hosts.…”
Section: Inoculum Host Susceptibility and Outcomes For Human Pathogensmentioning
confidence: 99%
“…23 Respiratory viruses typically follow this pattern of higher inoculum leading to a higher probability of infection in human challenge experiments, including influenza viruses, rhinovirus, and respiratory syncytial virus, [7][8][9][10]12 although there are exceptions, given the complexity of the pathogen-host interaction. [24][25][26] In addition, the dose needed to infect 50% of the human population (human infectious dose, HID 50 ) varies between pathogens and their subtypes or strains, which has been documented for influenza viruses, rhinovirus, and others. 21 The influence of the inoculum on disease severity is more challenging to study in humans, given that some Personal View viruses only cause mild clinical manifestations in immunocompetent human hosts.…”
Section: Inoculum Host Susceptibility and Outcomes For Human Pathogensmentioning
confidence: 99%
“…Finally, immunological cross-protection of flavivirus antibodies can also impact epidemics 10 , and the potential effects of a previous exposure to ZIKV on secondary DENV infections have been debated. Previous studies suggest that pre-exposure to ZIKV could ( 1 ) lead to severe dengue disease due to antibody-dependent enhancement 11 , as observed in secondary dengue infections by distinct dengue serotypes 12,13 ; and/or ( 2 ) provide partial protection, leading to less severe disease 8,14 . With nearly two-thirds of the dengue cases being mild or asymptomatic 6 , high levels of cross-protection could lead to less severe infections, and even higher underreporting.…”
Section: Introductionmentioning
confidence: 99%
“…Prior DENV infection was also associated with stronger cytotoxic CD8 T cell responses in ZIKVinfected humans and with protection against ZIKV in mice (30). In contrast, anti-ZIKV antibodies increased DENV2 infection, viral output, and migration of myeloid cells in skin explants to the same degree as anti-DENV3 antibodies (31). In murine models, transfer of anti-ZIKV antibodies caused greater clinical severity, mortality, proinflammatory cytokine levels, and viral load after DENV2 challenge compared with untreated mice (32,33).…”
mentioning
confidence: 97%
“…On the basis of our findings and previous literature on DENV1 to -4 (7,8,(44)(45)(46)(47)(48), we posit that prior ZIKV infection, like prior DENV infection, is particularly capable of enhancing DENV2 disease but that enhancement of other serotypes is possible. Mechanistic studies in animal models and human skin explants have shown that prior primary ZIKV infection induces anti-DENV2 antibodies that facilitate classical ADE of infection and increase disease severity during DENV2 challenge (23,(31)(32)(33)(34). In humans, primary ZIKV infection induces lower heterologous neutralizing antibody titers to DENV1 to -4 than primary DENV1 to -3 infection (41,42), suggesting the potential for enhancement of multiple serotypes ( fig.…”
mentioning
confidence: 99%