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Neutralization against Omicron SARS-CoV-2 from previous non-Omicron infection
jing Zou; Hongjie Xia; Xuping Xie; Chaitanya Kurhade; Rafael R. Machado; Scott C. Weaver; Ping Ren; Pei-Yong Shi.
Afiliação
  • jing Zou; University of Texas Medical Branch
  • Hongjie Xia; University of Texas Medical Branch
  • Xuping Xie; University of Texas Medical Branch
  • Chaitanya Kurhade; University of Texas Medical Branch
  • Rafael R. Machado; University of Texas Medical Branch
  • Scott C. Weaver; University of Texas Medical Branch
  • Ping Ren; University of Texas Medical Branch
  • Pei-Yong Shi; University of Texas Medical Branch
Preprint em Inglês | bioRxiv | ID: ppbiorxiv-473584
ABSTRACT
The explosive spread of the Omicron SARS-CoV-2 variant underscores the importance of analyzing the cross-protection from previous non-Omicron infection. We developed a high-throughput neutralization assay for Omicron SARS-CoV-2 by engineering the Omicron spike gene into an mNeonGreen USA-WA1/2020 SARS-CoV-2 (isolated in January 2020). Using this assay, we determined the neutralization titers of patient sera collected at 1- or 6-months after infection with non-Omicron SARS-CoV-2. From 1- to 6-month post-infection, the neutralization titers against USA-WA1/2020 decreased from 601 to 142 (a 4.2-fold reduction), while the neutralization titers against Omicron-spike SARS-CoV-2 remained low at 38 and 32, respectively. Thus, at 1- and 6-months after non-Omicron SARS-CoV-2 infection, the neutralization titers against Omicron were 15.8- and 4.4-fold lower than those against USA-WA1/2020, respectively. The low cross-neutralization against Omicron from previous non-Omicron infection supports vaccination of formerly infected individuals to mitigate the health impact of the ongoing Omicron surge.
Licença
cc_by_nc_nd
Texto completo: Disponível Coleções: Preprints Base de dados: bioRxiv Tipo de estudo: Rct Idioma: Inglês Ano de publicação: 2021 Tipo de documento: Preprint
Texto completo: Disponível Coleções: Preprints Base de dados: bioRxiv Tipo de estudo: Rct Idioma: Inglês Ano de publicação: 2021 Tipo de documento: Preprint
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