Trial reportJournal of immunology (Baltimore, Md. : 1950)2007
The induction and persistence of T cell IFN-gamma responses after vaccination or natural exposure is suppressed by Plasmodium falciparum.
Trial report in Journal of immunology (Baltimore, Md. : 1950), 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers, 2 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
59 citing papers in PubMed, 2 syntheses or guidelines pooled it, 99 citations in OpenAlex.
- A systematic review on malaria and dengue vaccines for the effective management of these mosquito borne diseases: Improving public health.Human vaccines & immunotherapeutics · 2024Pooled it
- Pooled it
- Malaria vaccine protection against intradermal or venous parasites: a randomized phase 2b human challenge trial.Nature medicine · 2026Trial
- Evaluating artesunate monotherapy and dihydroartemisinin-piperaquine as potential antimalarial options for prevaccination radical cures during future malaria vaccine field efficacy trials.Malaria journal · 2024Trial
- Genotypic analysis of RTS,S/AS01The Lancet. Infectious diseases · 2024Trial
- Whole sporozoite immunization with Plasmodium falciparum strain NF135 in a randomized trial.BMC medicine · 2023Trial
- Impact of exposure to malaria and nutritional status on responses to the experimental malaria vaccine ChAd63 MVA ME-TRAP in 5-17 month-old children in Burkina Faso.Frontiers in immunology · 2022Trial
- Trial
- Prime-boost vaccination with chimpanzee adenovirus and modified vaccinia Ankara encoding TRAP provides partial protection against Plasmodium falciparum infection in Kenyan adults.Science translational medicine · 2015Trial
- Antibody and T-cell responses associated with experimental human malaria infection or vaccination show limited relationships.Immunology · 2015Trial
- IFNγ/IL-10 co-producing cells dominate the CD4 response to malaria in highly exposed children.PLoS pathogens · 2014Trial
- Longevity and composition of cellular immune responses following experimental Plasmodium falciparum malaria infection in humans.PLoS pathogens · 2011Trial
- Trial
- MIG and the regulatory cytokines IL-10 and TGF-β1 correlate with malaria vaccine immunogenicity and efficacy.PloS one · 2010Trial
- Quantitative PCR evaluation of cellular immune responses in Kenyan children vaccinated with a candidate malaria vaccine.PloS one · 2009Trial
- Observational
- Life Course Malaria Exposure and SARS-CoV-2 Seroepidemiology in Ugandan Adolescents: A Longitudinal Study Nested in a Birth Cohort.Tropical medicine & international health : TM & IH · 2026Article
- Article
- Plasmodium falciparum Malaria Is Associated With Increased Kaposi Sarcoma-Associated Herpesvirus (KSHV) Seropositivity and Higher KSHV Antibody Breadth and Magnitude: Results of a Case-Control Study From Rural Uganda.The Journal of infectious diseases · 2024Article
- Sterile protection against relapsing malaria with a single-shot vaccine.NPJ vaccines · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
12 authors at 4 institutions in 3 countries.
Funding
Abstract
Epidemiological observations suggest that T cell immunity may be suppressed in malaria-endemic areas. In vitro studies, animal models, and limited data in humans link immunosuppression with malaria, malnutrition, and other parasitic infections. However, there are no data to determine whether malaria-induced immunosuppression is significant in the long-term, or relative data comparing it with other factors in malaria-endemic areas, so as to measure the impact of malaria, other parasitic disease, nutritional status, age. and location on the acquisition and longevity of IFN-gamma responses in children in Kenya. We studied these factors in two cohorts of 1- to 6-year-old children in a malaria-endemic area. T cell responses were induced by vaccination in one cohort, and acquired as a result of natural exposure in a second cohort. Serial ELISPOT assays conducted over a 1-year period measured the induction and kinetics of IFN-gamma production in response to the malaria Ag thrombospondin-related adhesion protein. Induced responses in both cohorts and the longevity of response in the vaccinated cohort were fitted to potential explanatory variables. Parasitemia was prospectively associated with reduced IFN-gamma-producing T cells in both cohorts (by 15-25%), and both parasitemia and episodes of febrile malaria were associated with 19 and 31% greater attrition of T cell responses, respectively. Malaria may reduce the efficacy vaccinations such as bacillus Calmette-Guérin and investigational T cell-inducing vaccines, and may delay the acquisition of immunity following natural exposure to malaria and other pathogens.
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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.