March 3, 2026Open Access

Repeat Influenza Vaccination Effects in 2021/22 and 2022/23 in a Community-Based Cohort in Hong Kong

Key Points

Repeat influenza vaccination is linked to a notable reduction in titer increase at day 14 post-vaccination, indicating altered immune response.
Titer increase saw a significant decrease, revealing the potential effects of repeated vaccinations on short-term immune reactions.
Assessment of antibody levels indicates minimal changes at six months post-vaccination, highlighting a complexity in long-term immunity.
Findings suggest potential implications for vaccination strategies and the importance of understanding the immune response over time.

Abstract

Our findings suggest that repeated influenza vaccination is associated with reduced titer increase at day 14 post-vaccination, but has less impact on antibody levels at six months post-vaccination.

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Discussion

Authors

J. Zhong

Shuyi Zhong

Lisa Touyon

Journals

The Journal of Infectious Diseases

Actions

Institutions

University of Michigan

University of Chicago

University of Hong Kong

References and Citations

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Repeat Influenza Vaccination Effects in 2021/22 and 2022/23 in a Community-Based Cohort in Hong Kong

Key Points

Abstract

Citation Network

Connected Papers

Discussion

Authors

Journals

Actions

Institutions

References and Citations

Citation Network

Connected Papers

Discussion

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