Low Neutralizing Activities to the Omicron Subvariants BN.1 and XBB.1.5 of Sera From the Individuals Vaccinated With a BA.4/5-Containing Bivalent mRNA Vaccine

Copyright © 2023. The Korean Association of Immunologists..

The continuous emergence of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) variants has provided insights for updating current coronavirus disease 2019 (COVID-19) vaccines. We examined the neutralizing activity of Abs induced by a BA.4/5-containing bivalent mRNA vaccine against Omicron subvariants BN.1 and XBB.1.5. We recruited 40 individuals who had received a monovalent COVID-19 booster dose after a primary series of COVID-19 vaccinations and will be vaccinated with a BA.4/5-containing bivalent vaccine. Sera were collected before vaccination, one month after, and three months after a bivalent booster. Neutralizing Ab (nAb) titers were measured against ancestral SARS-CoV-2 and Omicron subvariants BA.5, BN.1, and XBB.1.5. BA.4/5-containing bivalent vaccination significantly boosted nAb levels against both ancestral SARS-CoV-2 and Omicron subvariants. Participants with a history of SARS-CoV-2 infection had higher nAb titers against all examined strains than the infection-naïve group. NAb titers against BN.1 and XBB.1.5 were lower than those against the ancestral SARS-CoV-2 and BA.5 strains. These results suggest that COVID-19 vaccinations specifically targeting emerging Omicron subvariants, such as XBB.1.5, may be required to ensure better protection against SARS-CoV-2 infection, especially in high-risk groups.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:23

Enthalten in:

Immune network - 23(2023), 6 vom: 19. Dez., Seite e43

Sprache:

Englisch

Beteiligte Personen:

Nham, Eliel [VerfasserIn]
Kim, Jineui [VerfasserIn]
Lee, Jungmin [VerfasserIn]
Park, Heedo [VerfasserIn]
Kim, Jeonghun [VerfasserIn]
Lee, Sohyun [VerfasserIn]
Choi, Jaeuk [VerfasserIn]
Kim, Kyung Taek [VerfasserIn]
Yoon, Jin Gu [VerfasserIn]
Hwang, Soon Young [VerfasserIn]
Song, Joon Young [VerfasserIn]
Cheong, Hee Jin [VerfasserIn]
Kim, Woo Joo [VerfasserIn]
Park, Man-Seong [VerfasserIn]
Noh, Ji Yun [VerfasserIn]

Links:

Volltext

Themen:

Antibodies, neutralizing
COVID-19
Journal Article
SARS-CoV-2
Vaccine

Anmerkungen:

Date Revised 09.01.2024

published: Electronic-eCollection

Citation Status PubMed-not-MEDLINE

doi:

10.4110/in.2023.23.e43

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM366792156