Viruses (Sep 2024)

First Detection and Characterization of <i>Smacovirus</i> in the Human Vagina in Two Sequential Samples over a Twelve-Day Interval

  • Antonio Charlys da Costa,
  • Tania Regina Tozetto-Mendoza,
  • Endrya do Socorro Foro Ramos,
  • Pietro Bortoletto,
  • Noely Evangelista Ferreira,
  • Layla Honorato,
  • Erick Matheus Garcia Barbosa,
  • Heuder Gustavo Oliveira Paião,
  • Amanda Fernandes de Souza,
  • Iara M. Linhares,
  • Steven D. Spandorfer,
  • Elcio Leal,
  • Maria Cassia Mendes-Correa,
  • Steven S. Witkin

DOI
https://doi.org/10.3390/v16101545
Journal volume & issue
Vol. 16, no. 10
p. 1545

Abstract

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Background: Smacovirus is a CRESS-DNA virus identified almost exclusively in transient fecal samples from various vertebrate species. Objective: We evaluated human vaginal samples for the presence and maintenance of Smacovirus. Methods: Viral metagenomics analysis was performed on vaginal samples collected from 28 apparently healthy women in New York City, USA. Twenty-one of the women provided duplicate samples over a 12–21-day interval. Results: Phylogenetic analysis identified two samples from the same individual, collected over a twelve-day interval, that were positive for the complete Smacovirus genome. All detected sequence contigs belonged to a single variant of CRESS-DNA. Conclusions: The continuous presence of Smacovirus in the human vagina over a twelve-day period was identified.

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