Zika virus pathogenesis in rhesus macaques is unaffected by pre-existing immunity to dengue virus

Petraleigh Pantoja, Erick X. Pérez-Guzmán, Idia V. Rodríguez, Laura J. White, Olga González, Crisanta Serrano, Luis Giavedoni, Vida Hodara, Lorna Cruz, Teresa Arana, Melween I. Martínez, Mariah A. Hassert, James D. Brien, Amelia K. Pinto, Aravinda De Silva, Carlos A. Sariol

Research output: Contribution to journalArticlepeer-review

163 Scopus citations


Zika virus (ZIKV) is a re-emerging virus that has recently spread into dengue virus (DENV) endemic regions and cross-reactive antibodies (Abs) could potentially affect ZIKV pathogenesis. Using DENV-immune serum, it has been shown in vitro that antibody-dependent enhancement (ADE) of ZIKV infection can occur. Here we study the effects of pre-existing DENV immunity on ZIKV infection in vivo. We infect two cohorts of rhesus macaques with ZIKV; one cohort has been exposed to DENV 2.8 years earlier and a second control cohort is naïve to flaviviral infection. Our results, while confirming ADE in vitro, suggest that pre-existing DENV immunity does not result in more severe ZIKV disease. Rather our results show a reduction in the number of days of ZIKV viremia compared to naïve macaques and that the previous exposure to DENV may result in modulation of the immune response without resulting in enhancement of ZIKV pathogenesis.

Original languageEnglish
Article number15674
JournalNature Communications
StatePublished - Jun 23 2017

Bibliographical note

Publisher Copyright:
© 2017 The Author(s).

ASJC Scopus subject areas

  • General Chemistry
  • General Biochemistry, Genetics and Molecular Biology
  • General Physics and Astronomy


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