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Reduced neutralization of SARS-CoV-2 B.1.617 by vaccine and convalescent serum

Liu, Chang, Ginn, Helen M., Dejnirattisai, Wanwisa, Supasa, Piyada, Wang, Beibei, Tuekprakhon, Aekkachai, Nutalai, Rungtiwa, Zhou, Daming, Mentzer, Alexander J., Zhao, Yuguang, and others. (2021) Reduced neutralization of SARS-CoV-2 B.1.617 by vaccine and convalescent serum. Cell, . ISSN 0092-8674. (doi:10.1016/j.cell.2021.06.020) (KAR id:88739)

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SARS-CoV-2 has undergone progressive change with variants conferring advantage rapidly becoming dominant lineages e.g. B.1.617. With apparent increased transmissibility variant B.1.617.2 has contributed to the current wave of infection ravaging the Indian subcontinent and has been designated a variant of concern in the UK. Here we study the ability of monoclonal antibodies, convalescent and vaccine sera to neutralize B.1.617.1 and B.1.617.2 and complement this with structural analyses of Fab/RBD complexes and map the antigenic space of current variants. Neutralization of both viruses is reduced when compared with ancestral Wuhan related strains but there is no evidence of widespread antibody escape as seen with B.1.351. However, B.1.351 and P.1 sera showed markedly more reduction in neutralization of B.1.617.2 suggesting that individuals previously infected by these variants may be more susceptible to reinfection by B.1.617.2. This observation provides important new insight for immunisation policy with future variant vaccines in non-immune populations.

Item Type: Article
DOI/Identification number: 10.1016/j.cell.2021.06.020
Subjects: Q Science > QR Microbiology > QR355 Virology
Divisions: Divisions > Division of Natural Sciences > Medway School of Pharmacy
Depositing User: Nigel Temperton
Date Deposited: 17 Jun 2021 19:48 UTC
Last Modified: 04 Jul 2023 14:10 UTC
Resource URI: (The current URI for this page, for reference purposes)

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