Trial reportVaccine2016
Morning vaccination enhances antibody response over afternoon vaccination: A cluster-randomised trial.
Trial report in Vaccine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 156 papers, 5 of them syntheses that pooled 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.
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.
Who cites it
156 citing papers in PubMed, 5 syntheses or guidelines pooled it, 295 citations in OpenAlex.
- Chrono-optimizing vaccine administration: a systematic review and meta-analysis.Frontiers in public health · 2025Pooled it
- Circadian Variation in the Response to Vaccination: A Systematic Review and Evidence Appraisal.Journal of biological rhythms · 2024Pooled it
- Effect of immunotherapy-infusion time of day on survival of patients with advanced cancers: a study-level meta-analysis.ESMO open · 2024Pooled it
- Sufficient Sleep, Time of Vaccination, and Vaccine Efficacy: A Systematic Review of the Current Evidence and a Proposal for COVID-19 Vaccination.The Yale journal of biology and medicine · 2022Pooled it
- Machine learning identifies a compact gene set for monitoring the circadian clock in human blood.Genome medicine · 2017Pooled it
- Effect of the time of day for vaccination on the immune response to Ebola Virus Disease vaccines: A modeling study from PREVAC randomized trial.PLoS neglected tropical diseases · 2026Trial
- Exogenous melatonin boosts vaccine-induced immunity in individuals with high pre-existing influenza immunity.Frontiers in immunology · 2025Trial
- A randomized clinical trial of the impact of melatonin on influenza vaccine: Outcomes from the melatonin and vaccine response immunity and chronobiology study (MAVRICS).Human vaccines & immunotherapeutics · 2024Trial
- The impact of circadian rhythm on Bacillus Calmette-Guérin vaccination effects on SARS-CoV-2 infections.Frontiers in immunology · 2023Trial
- Identification of a Preliminary Plasma Metabolome-based Biomarker for Circadian Phase in Humans.Journal of biological rhythms · 2021Trial
- Overall survival according to timing of immune checkpoint inhibitors administration in patients with advanced cancer: results from a large single-centre cohort analysis.British journal of cancer · 2026Article
- Dendritic cell circadian clocks shape memory CD8Science advances · 2026Article
- Influenza vaccine response is predicted by chronotype and differentially associated with pre- and post-vaccination sleep.Brain, behavior, & immunity - health · 2026Article
- Daily rhythms modulate Acinetobacter baumannii physiology impacting infection outcome and antibiotic-inactivating capacity.Scientific reports · 2026Article
- Circadian engineering of in vivo CAR T cell therapy for precision oncology.NPJ precision oncology · 2026Review
- Translational applications of circadian research: connecting chronobiology to medicine.Npj biological timing and sleep · 2026Review
- Article
- Respiratory virus immune response in the aged host.Immunity & ageing : I & A · 2026Review
- Impact of time-of-day on immune checkpoint inhibitor therapy in cancer patients: an up-to-date clinical review.Frontiers in immunology · 2026Review
- ChronoimmunoTOX: A Single-Institution Retrospective Study on How the Time of Administration Impacts Immune Checkpoint Inhibitor Efficacy and Toxicity in Melanoma.Journal of clinical medicine · 2025Article
96 more citing papers are in PubMed but not listed here.
Corrections and comments
- Erratum issued
Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
objectivesOlder adults are less able to produce a protective antibody response to vaccinations. One factor that contributes to this is immune ageing. Here we examined whether diurnal variations in immune responses might extend to the antibody response to vaccination.
designWe utilised a cluster-randomised trial design.
setting24 General Practices (GPs) across the West Midlands, UK who were assigned to morning (9-11am; 15 surgeries) or afternoon (3-5pm; 9 surgeries) vaccination times for the annual UK influenza vaccination programme.
participants276 adults (aged 65+ years and without a current infection or immune disorder or taking immunosuppressant medication).
interventionsParticipants were vaccinated in the morning or afternoon between 2011 and 2013.
main outcome measuresThe primary outcome was the change in antibody titres to the three vaccine influenza strains from pre-vaccination to one month post-vaccination. Secondary outcomes of serum cytokines and steroid hormone concentrations were analysed at baseline to identify relationships with antibody responses.
resultsThe increase in antibody levels due to vaccination differed between morning and afternoon administration; mean difference (95% CI) for H1N1 A-strain, 293.3 (30.97-555.66) p=.03, B-strain, 15.89 (3.42-28.36) p=.01, but not H3N2 A-strain, 47.0 (-52.43 to 146.46) p=.35; those vaccinated in the morning had a greater antibody response. Cytokines and steroid hormones were not related to antibody responses. No adverse events were reported.
conclusionsThis simple manipulation in the timing of vaccine administration to favour morning vaccination may be beneficial for the influenza antibody response in older adults, with potential implications for vaccination strategies generally.
trial registrationThis trial is registered with the ISRCTN (ISRCTN70898162).
Indexed as
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What OpenQuestion holds
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.