Evidence map›Paper›PMID 33306484›Full record

ArticleThe Journal of clinical investigation2021

BCG vaccination in health care providers and the protection against COVID-19.

Mihai G Netea, Jos Wm van der Meer, Reinout van Crevel

Open access · bronzeAbstract readComment
In one paragraph

Article in The Journal of clinical investigation, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.4field-weighted citation impact, top 10% 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

24 citing papers in PubMed, 44 citations in OpenAlex.

  1. Trial
  2. Role of Trained Immunity in Heath and Disease.Current cardiology reports · 2025
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  3. PBMC and fibroblast cocultures to mimic themicroPublication biology · 2025
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  12. Passive Samplers, an Important Tool for Continuous Monitoring of the COVID-19 Pandemic.Environmental science and pollution research international · 2022
    Review
  13. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 3 countries.

Mihai G NeteaDepartment of Internal Medicine and Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Netherlands.
Jos Wm van der MeerDepartment of Internal Medicine and Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Netherlands.
Reinout van CrevelDepartment of Internal Medicine and Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Netherlands.
Radboud University Nijmegen · NLUniversity of Bonn · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A number of coronavirus disease 2019 (COVID-19) vaccine candidates have shown promising results, but substantial uncertainty remains regarding their effectiveness and global rollout. Boosting innate immunity with bacillus Calmette Guérin (BCG) or other live attenuated vaccines may also play a role in the fight against the COVID-19 pandemic. BCG has long been known for its nonspecific beneficial effects that are most likely explained by epigenetic and metabolic reprogramming of innate immune cells, termed trained immunity. In this issue of the JCI, Rivas et al. add to these arguments by showing that BCG-vaccinated health care providers from a Los Angeles health care organization had lower rates of COVID-19 diagnoses and seropositivity compared with unvaccinated individuals. Prospective clinical trials are thus warranted to explore the effects of BCG vaccination in COVID-19. We posit that beyond COVID-19, vaccines such as BCG that elicit trained immunity may mitigate the impact of emerging pathogens in future pandemics.

Indexed as

BCG VaccineCOVID-19Health PersonnelHumansPandemicsProspective StudiesSARS-CoV-2Seroepidemiologic StudiesVaccinationBCG Vaccine

Identifiers

PMID33306484
PMCPMC7810495
OpenAlexW3111677110

What OpenQuestion holds

Textmetadata
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.