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Helicobacter infections

Compared within 1 study that had both: 80 people with Helicobacter infections and 79 healthy people. 1 genus is less common in people with Helicobacter infections, and 3 more common.

A difference is an association: it doesn’t mean these genera cause, prevent or treat Helicobacter infections. GMrepo reports this group at the genus level only, so these are genera, not species.

Phylum

Searching opens both lists and shows only matching rows.

Less common in Helicobacter infections · 1

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people
  1. Thomasclavelia genus in 1 study Healthy 80% Helicobacter infections 53%

More common in Helicobacter infections · 3

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people
  1. Collinsella genus in 1 study Healthy 53% Helicobacter infections 78%
  2. Phascolarctobacterium genus in 1 study Healthy 7.6% Helicobacter infections 26%
  3. Butyricimonas genus in 1 study Healthy 15% Helicobacter infections 36%

Where these numbers come from

Studies
Only GMrepo projects that had people with the condition and healthy people, 10 or more of each. Numbers come from those studies, never from pooling.Sampled in Japan.
How common
The share of people whose sample has any of it, in the people with the condition and in the healthy people of those same studies. Tested within studies (Cochran–Mantel–Haenszel, corrected for testing many microbes); a difference counts when it is clear and meaningful (Cohen’s h of 0.2 or more).
Strength word
Counted by code from how many studies point the same way: Seen again and again (3 or more, none clearly the other way), Seen more than once (2, the majority), Seen once (1, listed last). Where studies disagree, a row isn’t listed.
Each study
Tap a row for every study’s own numbers, and for how much carriers have.
Analysis
Our analysis of GMrepo data. GMrepo on Data sources · Read the rules

Also compared · 77 genera

Compared within studies that had both, but not listed above.

No meaningful difference · 77
PubMed · human studies and reviews first

Recent research

All research on it
  1. Observational Terapevticheskii arkhiv · 2026
    [Efficacy and safety of H. pylori eradication therapy in real-world clinical practice: results of the «PAMIR» observational program].
    PubMed ↗
  2. Randomized trial Frontiers in cellular and infection microbiology · 2026
    Probiotics alleviate oral microbiota disruptions induced by Helicobacter pylori eradication with vonoprazan-amoxicillin dual therapy: a randomized double-blind placebo-controlled trial. (An exploratory study).
    PubMed ↗
  3. Review Terapevticheskii arkhiv · 2026
    [Probiotics' position in clinical practice: focus on the combination of Lactobacillus acidophilus (LA-5) and Bifidobacterium animalis subsp. lactis (BB-12). A review].
    PubMed ↗
  4. Randomized trial Scientific reports · 2025
    Impact of Enterococcus faecium 129 BIO 3B-R on Helicobacter pylori eradication therapy side effects in adult patients: a randomized, double-blind, placebo-controlled study.
    PubMed ↗
  5. Review Microbial pathogenesis · 2025
    Plant and probiotic-based edible vaccines for Helicobacter pylori: Research status and application prospects.
    PubMed ↗

Source: PubMed, U.S. National Library of Medicine · 58 linked papers, last 10 years