Trial reportClinical infectious diseases : an official publication of the Infectious Diseases Society of America2023
Comparison of Two High-Dose Versus Two Standard-Dose Influenza Vaccines in Adult Allogeneic Hematopoietic Cell Transplant Recipients.
Trial report in Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07485855 (Comparison of Immunogenicity of Different Influenza Vaccines in Patients With Hematologic Malignancies), which is not on this map. Cited by 7 papers, 1 of them a synthesis that pooled it.
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.
Comparison of Immunogenicity of Different Influenza Vaccines in Patients With Hematologic Malignancies
Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Vaccination of Adults With Cancer: ASCO Guideline.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2024Guideline
- A study of booster dose influenza vaccination responses compared to standard dose in lupus patients: an open-labeled, randomized controlled study.Clinical and experimental medicine · 2025Trial
- A Randomized, Double-Blind Clinical Trial of One vs Two Doses of High-Dose Influenza Vaccine in Solid Organ Transplant Recipients.Open forum infectious diseases · 2026Article
- Influenza Vaccines for Persons Who Are Immunocompromised: A Scoping Review of the Literature.Open forum infectious diseases · 2026Article
- Vaccination Against Respiratory Infections in Adults with Cancer: A Concise Guide for Clinicians.Vaccines · 2026Review
- Innovation in active and passive immunisation of people who are immunocompromised: a call to action.The Lancet. Infectious diseases · 2026Review
- Vaccination as a Key Determinant of Influenza Disease Severity in Allogeneic Hematopoietic Stem Cell Transplant Recipients: An Observational Retrospective Study.Open forum infectious diseases · 2026Article
Corrections and comments
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Authors and funding
17 authors.
Funding
Abstract
backgroundAdult hematopoietic cell transplant (HCT) recipients are at high risk for influenza-related morbidity and mortality and have suboptimal influenza vaccine immune responses compared to healthy adults, particularly within 2 years of transplant.
methodsThis phase II, double-blind, multicenter randomized controlled trial compared 2 doses of high-dose trivalent (HD-TIV) to 2 doses of standard-dose quadrivalent (SD-QIV) influenza vaccine administered 1 month apart in adults 3-23 months post-allogeneic HCT. Hemagglutinin antibody inhibition (HAI) titers were measured at baseline, 4 weeks following each vaccine dose, and approximately 7 months post-second vaccination. Injection-site and systemic reactions were assessed for 7 days post-vaccination. The primary immunogenicity comparison was geometric mean HAI titer (GMT) at visit 3 (4 weeks after the second dose); we used linear mixed models to estimate adjusted GMT ratios (aGMRs) comparing HD-TIV/SD-QIV for each antigen.
resultsWe randomized 124 adults; 64 received SD-QIV and 60 received HD-TIV. Following the second vaccination, HD-TIV was associated with higher GMTs compared to SD-QIV for A/H3N2 (aGMR = 2.09; 95% confidence interval [CI]: [1.19, 3.68]) and B/Victoria (aGMR = 1.61; 95% CI: [1.00, 2.58]). The increase was not statistically significant for A/H1N1 (aGMR = 1.16; 95% CI: [0.67, 2.02]). There was a trend to more injection-site reactions for HD-TIV after the second vaccination compared to SD-QIV (50% vs 33%; adjusted odds ratio [aOR] = 4.53; 95% CI: [0.71, 28.9]), whereas systemic reactions were similar between groups with both injections.
conclusionsAdult allogeneic HCT recipients who received 2 doses of HD-TIV produced higher HAI antibody responses for A/H3N2 and B/Victoria compared with 2 doses of SD-QIV, with comparable injection-site or systemic reactions.
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