Evidence map›Paper›PMID 39794472›Full record

Trial reportNature microbiology2025

Vaccine-induced T cell responses control Orthoflavivirus challenge infection without neutralizing antibodies in humans.

Shirin Kalimuddin, Christine Y L Tham, Yvonne F Z Chan, Shou Kit Hang, Kamini Kunasegaran, Adeline Chia, Candice Y Y Chan, Dorothy H L Ng, Jean X Y Sim, Hwee-Cheng Tan and 11 more

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Nature microbiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

38 citing papers in PubMed.

  1. Article
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  4. CD4Nature immunology · 2026
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  15. Broad beta-CoV immunity and transmission blockade by a single-dose live-attenuated vaccine with atypical codon usage.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  16. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

21 authors.

Shirin KalimuddinDepartment of Infectious Diseases, Singapore General Hospital, Singapore, Singapore. shirin.kalimuddin@singhealth.com.sg.ORCID http://orcid.org/0000-0001-9319-5908
Christine Y L ThamProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.ORCID http://orcid.org/0000-0002-2913-7591
Yvonne F Z ChanDepartment of Infectious Diseases, Singapore General Hospital, Singapore, Singapore.
Shou Kit HangProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.
Kamini KunasegaranProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.
Adeline ChiaProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.
Candice Y Y ChanDepartment of Infectious Diseases, Singapore General Hospital, Singapore, Singapore.
Dorothy H L NgDepartment of Infectious Diseases, Singapore General Hospital, Singapore, Singapore.
Jean X Y SimDepartment of Infectious Diseases, Singapore General Hospital, Singapore, Singapore.
Hwee-Cheng TanProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.
Ayesa SyeninaProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.
An Qi NgohProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.
Noor Zayanah HamisProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.
Valerie ChewProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.
Yan Shan LeongProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.ORCID http://orcid.org/0000-0001-7402-6172
Jia Xin YeeProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.ORCID http://orcid.org/0000-0001-9056-3621
Jenny G LowDepartment of Infectious Diseases, Singapore General Hospital, Singapore, Singapore.ORCID http://orcid.org/0000-0002-3876-2209
Kuan Rong ChanProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.ORCID http://orcid.org/0000-0002-2427-671X
Eugenia Z OngProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.
Antonio BertolettiProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.ORCID http://orcid.org/0000-0002-2942-0485
Eng Eong OoiProgram in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore. engeong.ooi@duke-nus.edu.sg.ORCID http://orcid.org/0000-0002-0520-1544

Funding

MOH | National Medical Research Council (NMRC) MOH-000617-00MOH | National Medical Research Council (NMRC) MOH-001271-00MOH | National Medical Research Council (NMRC) MOH-001633-00National Research Foundation Singapore (National Research Foundation-Prime Minister's office, Republic of Singapore) NRF-CRP25-2020-0003
6 · The paper itself

Abstract

T cells have been identified as correlates of protection in viral infections. However, the level of vaccine-induced T cells needed and the extent to which they alone can control acute viral infection in humans remain uncertain. Here we conducted a double-blind, randomized controlled trial involving vaccination and challenge in 33 adult human volunteers, using the live-attenuated yellow fever (YF17D) and chimeric Japanese encephalitis-YF17D (JE/YF17D) vaccines. Both Orthoflavivirus vaccines share T cell epitopes but have different neutralizing antibody epitopes. The primary objective was to assess the extent to which vaccine-induced T cell responses, independent of neutralizing antibodies, were able to reduce post-challenge viral RNAaemia levels. Secondary objectives included an assessment of surrogate measures of viral control, including post-challenge antibody titres and symptomatic outcomes. YF17D vaccinees had reduced levels of JE/YF17D challenge viraemia, compared with those without previous YF17D vaccination (mean log

Indexed as

Antibodies, NeutralizingFlaviviridae InfectionsT-LymphocytesYellow Fever VaccineAdultAntibodies, ViralDouble-Blind MethodEncephalitis Virus, JapaneseFemaleHumansMaleMiddle AgedRNA, ViralVaccinationVaccines, AttenuatedViral LoadAntibodies, NeutralizingAntibodies, ViralRNA, ViralVaccines, AttenuatedYellow Fever Vaccine

Identifiers

PMID39794472
PMCPMC11790491

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

None linked

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.