Evidence map›Paper›PMID 33405321›Full record

SynthesisInternational journal of clinical practice2021

Efficacy and safety of OM-85 in paediatric recurrent respiratory tract infections which could have a possible protective effect on COVID-19 pandemic: A meta-analysis.

Changqing Cao, Jinghua Wang, Yuning Li, Yumei Li, Liyan Ma, Mohamed E A Abdelrahim, Yi Zhu

Open access · greenAbstract readMeta-Analysis
In one paragraph

Synthesis in International journal of clinical practice, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
6.4field-weighted citation impact, top 3% 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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Designing lysate-based hydrogels for on-demand therapy.Journal of pharmaceutical analysis · 2026
    Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Review
  10. A critical analysis of the effect of OM-85 for the prevention of recurrent respiratory tract infections or wheezing/asthma from systematic reviews with meta-analysis.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2024
    Article
  11. Article
  12. Review
  13. Review
  14. Bacterial immunotherapy is highly effective in reducing recurrent upper respiratory tract infections in children: a prospective observational study.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2023
    Observational
  15. The OM-85 bacterial lysate: a new tool against SARS-CoV-2?Multidisciplinary respiratory medicine · 2023
    Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. OM-85 Broncho-VaxomBiomedicines · 2021
    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

7 authors at 5 institutions in 2 countries.

Changqing CaoDepartment of Pediatrics, The First Hospital of Lanzhou University, Lanzhou, P.R. China.
Jinghua WangDivision of Rheumatology & Allergy in the Department of Pediatrics, the First Hospital of Jilin University, Changhun, Jilin, P.R. China.
Yuning LiDepartment of Pediatrics, The First Hospital of Lanzhou University, Lanzhou, P.R. China.
Yumei LiDepartment of Pediatrics, The First Hospital of Lanzhou University, Lanzhou, P.R. China.
Liyan MaDepartment of Pediatrics, The General Hospital of Ningxia Medical University, Yinchuan, P.R. China.
Mohamed E A AbdelrahimClinical Pharmacy Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt.ORCID https://orcid.org/0000-0003-0227-8404
Yi ZhuHospital Infection Management Office, The Hospital of Xinjiang Production and Construction Corps, Wulumuqi, P.R. China.ORCID https://orcid.org/0000-0001-7620-2918
First Hospital of Lanzhou University · CNBeni-Suef University · EGJilin University · CNNingxia Medical University · CNXinjiang Production and Construction Corps · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe OM-85 (Broncho-Vaxom) consumption has drawn considerable attention in the prevention of recurrent respiratory tract infections. However, it has been reported that the relationship between OM-85 consumption and recurrent respiratory tract infections is variable. This meta-analysis was performed to evaluate this relationship.

methodsA systematic literature search up-to May 2020 was performed and 14 studies were detected with 1859 paediatric subjects, of them 890 consumed OM-85. They were reporting relationships between OM-85 consumption and recurrent respiratory tract infections. Odds ratio (OR) or mean differences (MD) with 95% confidence intervals (CIs) was calculated to evaluate the prognostic role of OM-85 consumption and recurrent respiratory tract infections using the dichotomous or continuous method with a random or fixed-effect model.

resultsOM-85 consumption was significantly related to lower frequency of respiratory tract infections (MD, -1.16; 95% CI, -1.66 to -0.65, P < .001); lower total duration of respiratory tract infections (MD, -19.51; 95% CI, -23.00 to -16.01, P < .001); lower incidence of respiratory tract infections (OR, 0.40; 95% CI, 0.21-0.77, P = .006); lower number of antibiotic courses (MD, -1.40; 95% CI, -2.63 to 0.17, P = .03); and lower antibiotic use (OR, 0.38; 95% CI, 0.29-0.52, P < .001). However, OM-85 consumption was not significantly related to adverse event rate (OR, 1.02; 95% CI, 0.52-2.03, P = .94); or to wheezing attacks frequency (MD, -0.25; 95% CI, -0.59 to 0.08, P = .14).

conclusionsThe impact of OM-85 consumption on recurrent respiratory tract infections may have a great effect as a tool to improve subjects' immunity against recurrent respiratory tract infections, which could be helpful in crucial situations, eg, COVID-19 pandemic. OM-85 non-consumers had an independent risk relationship with recurrent respiratory tract infections. This relationship forces us to recommend OM-85 consumption with those with a high risk of recurrent respiratory tract infections to avoid any possible complications.

Indexed as

COVID-19Respiratory Tract InfectionsAdjuvants, ImmunologicChildHumansPandemicsSARS-CoV-2Adjuvants, Immunologic

Identifiers

PMID33405321
PMCPMC7883224
OpenAlexW3118262634

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.