Evidence map›Paper›PMID 34603280›Full record

ArticleFrontiers in immunology2021

Nutritional Immunity, Zinc Sufficiency, and COVID-19 Mortality in Socially Similar European Populations.

Samer Singh, Amita Diwaker, Brijesh P Singh, Rakesh K Singh

Open access · goldAbstract read
In one paragraph

Article in Frontiers in immunology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% of its field
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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Frontiers in immunology · 2025
    Article
  4. Article
  5. Article
  6. The zinc proteome of SARS-CoV-2.Metallomics : integrated biometal science · 2022
    Article
  7. Article
  8. Serum zinc levels in pediatric patients with COVID-19.European journal of pediatrics · 2022
    Observational
  9. Article
  10. Review
  11. Observational
  12. Article
  13. Article
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

4 authors at 2 institutions in 1 country.

Samer SinghCentre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India.
Amita DiwakerDepartment of Obstetrics and Gynecology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India.
Brijesh P SinghDepartment of Statistics, Institute of Science, Banaras Hindu University, Varanasi, India.
Rakesh K SinghDepartment of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, India.
Banaras Hindu University · INInstitute of Medical Sciences · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The impact of zinc (Zn) sufficiency/supplementation on COVID-19-associated mortality and incidence (SARS-CoV-2 infections) remains unknown. During an infection, the levels of free Zn are reduced as part of "nutritional immunity" to limit the growth and replication of pathogen and the ensuing inflammatory damage. Considering its key role in immune competency and frequently recorded deficiency in large sections of different populations, Zn has been prescribed for both prophylactic and therapeutic purposes in COVID-19 without any corroborating evidence for its protective role. Multiple trials are underway evaluating the effect of Zn supplementation on COVID-19 outcome in patients getting standard of care treatment. However, the trial designs presumably lack the power to identify negative effects of Zn supplementation, especially in the vulnerable groups of elderly and patients with comorbidities (contributing 9 out of 10 deaths; up to >8,000-fold higher mortality). In this study, we have analyzed COVID-19 mortality and incidence (case) data from 23 socially similar European populations with comparable confounders (population: 522.47 million; experiencing up to >150-fold difference in death rates) and at the matching stage of the pandemic (March 12 to June 26, 2020; first wave of COVID-19 incidence and mortality). Our results suggest a positive correlation between populations' Zn-sufficiency status and COVID-19 mortality [

Indexed as

ComorbidityCOVID-19Dietary SupplementsEuropeHumansOxidation-ReductionOxidative StressSARS-CoV-2ZincZincCOVID-19infectionmortalitynutritional immunityoxidative stressredoxSARS-CoV-2zinc supplementation

Identifiers

PMID34603280
PMCPMC8484327
OpenAlexW3200564657

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.