SynthesisFrontiers in public health2021
Vitamin D Status and SARS-CoV-2 Infection and COVID-19 Clinical Outcomes.
Synthesis in Frontiers in public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04810949 (Effect of Vitamin D Supplementation on the Development of Respiratory Infections), which is not on this map. Cited by 93 papers, 6 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.
Effect of Vitamin D Supplementation on the Development of Respiratory Infections (COVID-19) in Health Personnel at Hospital Clínica NOVA With Serum Values> 20ng / ml
Who cites it
93 citing papers in PubMed, 6 syntheses or guidelines pooled it.
- Micronutrients, Vitamin D, and Inflammatory Biomarkers in COVID-19: A Systematic Review and Meta-analysis of Causal Inference Studies.Nutrition reviews · 2025Pooled it
- Vitamin D Deficiency Meets Hill's Criteria for Causation in SARS-CoV-2 Susceptibility, Complications, and Mortality: A Systematic Review.Nutrients · 2025Pooled it
- Association Between the Level of Vitamin D and COVID-19 Infection in Children and Adolescents: A Systematic Review.The American journal of tropical medicine and hygiene · 2024Pooled it
- The Effect of Vitamin D Supplementation Post COVID-19 Infection and Related Outcomes: A Systematic Review and Meta-Analysis.Nutrients · 2024Pooled it
- Pharmacological evaluation of vitamin D in COVID-19 and long COVID-19: recent studies confirm clinical validation and highlight metformin to improve VDR sensitivity and efficacy.Inflammopharmacology · 2024Pooled it
- Effect of vitamin D supplementation on COVID-19 patients: A systematic review and meta-analysis.Frontiers in nutrition · 2023Pooled it
- Effect of a test-and-treat approach to vitamin D supplementation on risk of all cause acute respiratory tract infection and covid-19: phase 3 randomised controlled trial (CORONAVIT).BMJ (Clinical research ed.) · 2022Trial
- Changes in the immune response against SARS-CoV-2 in individuals with severe COVID-19 treated with high dose of vitamin D.Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2022Trial
- Efficacy and Safety of Vitamin D Supplementation to Prevent COVID-19 in Frontline Healthcare Workers. A Randomized Clinical Trial.Archives of medical research · 2022Trial
- Vitamin D as an Immuno-Endocrine Modulator: Discovering Its Role in Autoimmune Disorders and Host Defense Mechanisms.Journal of clinical medicine · 2026Review
- Ten-Year Trends in Serum 25-Hydroxyvitamin D in Slovenia (2014-2023): Laboratory-Based Data from Tested Individuals and COVID-19-Period Changes.Nutrients · 2026Article
- COVID-19 and long-term risk of incident laboratory-defined micronutrient deficiency in patients with type 2 diabetes: a multicenter propensity score-matched cohort study.Frontiers in nutrition · 2026Article
- Association of omega-3 fatty acids (EPA, DHA, DPA) and vitamin D with mortality and morbidity outcomes in COVID-19 patients: the COMED study.Frontiers in nutrition · 2026Article
- Association between vitamin D and COVID-19 infection and mortality in Taiwanese patients.Journal of the Chinese Medical Association : JCMA · 2025Article
- Exploring the Association of Vitamin D and VDR Polymorphisms with Disease Severity in COVID-19 and Influenza.Biomedicines · 2025Article
- Euthyroid Sick Syndrome as an Index of Prognosis in Severe COVID-19 Disease.Medicina (Kaunas, Lithuania) · 2025Article
- Association between 25(OH)D levels and clinical outcomes in patients infected with SARS-CoV-2: a cross-sectional study.Scientific reports · 2025Article
- Impact of vitamin D levels on mortality in older covid-19 vaccinated patients.BMC geriatrics · 2025Article
- Review
- Vitamin D as an Adjuvant Immune Enhancer to SARS-Cov-2 Vaccine.Current microbiology · 2025Article
33 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
13 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
PubMed holds no abstract for this paper.
Indexed as
Identifiers
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.