First Detection of DS-1-like G1P[8] Double-gene Reassortant Rotavirus Strains on The American Continent, Brazil, 2013

Sci Rep. 2019 Feb 18;9(1):2210. doi: 10.1038/s41598-019-38703-7.

Abstract

Emergence of DS-1-like-G1P[8] rotavirus in Asia have been recently reported. We report for the first time the detection and the whole genome phylogenetic analysis of DS-1-like-G1P[8] strains in America. From 2013 to 2017, a total of 4226 fecal samples were screened for rotavirus by ELISA, PAGE, RT-PCR and sequencing. G1P[8] represented 3.7% (30/800) of all rotavirus-positive samples. DS-1-like-G1P[8] comprised 1.6% (13/800) detected exclusively in 2013, and Wa-like-G1P[8] comprised 2.1% (17/800) detected from 2013 to 2015. Whole genome sequencing confirmed the DS-1-like backbone I2-R2-C2-M2-A2-N2-T2-E2-H2. All genome segments of the Brazilian DS-1-like-G1P[8] strains clustered with those of Asian strains, and apart from African DS-1-like-G1P[8] strains. In addition, Brazilian DS-1-like-G1P[8] reassortants distantly clustered with DS-1-like backbone strains simultaneously circulating in the country, suggesting that the Brazilian DS-1-like-G1P[8] strains are likely imported from Asia. Two distinct NSP4 E2 genotype lineages were also identified, indicating the existence of a co-circulating pool of different DS-1-like G1P[8] strains. Surveillance systems must be developed to examine if RVA vaccines are still effective for the prevention against unusual DS-1-like-G1P[8] strains.

Publication types

  • Historical Article

MeSH terms

  • Brazil / epidemiology
  • Genes, Viral*
  • Genome, Viral
  • Genomics / methods
  • History, 21st Century
  • Humans
  • Phylogeny
  • Public Health Surveillance
  • RNA, Viral
  • Reassortant Viruses / genetics*
  • Rotavirus / classification*
  • Rotavirus / genetics*
  • Rotavirus Infections / epidemiology*
  • Rotavirus Infections / history
  • Rotavirus Infections / virology*

Substances

  • RNA, Viral