ArticleVaccines2025
COVID-19 Vaccination Enhances the Immunogenicity of Seasonal Influenza Vaccination in the Elderly.
Article in Vaccines, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
2 citing papers in PubMed.
- The Decline in Influenza Antibody Titers and Modifiers of Vaccine Immunity from over Ten Years of Serological Data.medRxiv : the preprint server for health sciences · 2026Article
- Elicitation of neutralizing antibodies and IgG4 subclass switching following booster vaccination with ancestral COVID-19 mRNA vaccines does not reduce breakthrough infections.Human vaccines & immunotherapeutics · 2025Article
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
BACKGROUND/
objectivesThe co-circulation of both influenza viruses and SARS-CoV-2 poses a significant health risk, especially for the elderly. While vaccination against both diseases remains an effective strategy to reduce the burden of symptomatic infections, the effect of administering COVID-19 mRNA and seasonal influenza vaccines (COV-Flu) on elicited antibody responses has not been explored.
methodsParticipants between 18 and 90 years old were vaccinated with COVID-19 mRNA vaccines (
resultsThe administration of influenza virus vaccines and COVID-19 mRNA vaccines within a three-month period significantly enhanced the post-vaccination HAI titers against both influenza A and B vaccine components, particularly in the elderly (65-90) participants. There were no significant differences in SARS-CoV-2 neutralization titers in COV-Flu participants compared to mono-COVID-19 participants.
conclusionsVaccination with both the COVID-19 mRNA and influenza vaccines enhances influenza-specific HAI titers without compromising the neutralization titers elicited by COVID-19 mRNA vaccination against SARS-CoV-2, especially in the elderly. These findings indicate the potential benefits of this approach, particularly for older adults, by boosting influenza virus vaccine-induced serum HAI activity while maintaining COVID-19 protective immunity.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.