probiome Sign in
← Conditions Digestive systemInfections Genus-level

Chronic hepatitis B

Compared within 1 study that had both: 58 people with chronic hepatitis B and 70 healthy people. No genera less common in people with chronic hepatitis B, and 4 more common.

A difference is an association: it doesn’t mean these genera cause, prevent or treat chronic hepatitis B. 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 chronic hepatitis B · 0

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people

None compared.

More common in chronic hepatitis B · 4

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people
  1. Gemella genus in 1 study Healthy 11% chronic hepatitis B 38%
  2. Rothia genus in 1 study Healthy 4.3% chronic hepatitis B 24%
  3. Mediterraneibacter genus in 1 study Healthy 71% chronic hepatitis B 93%
  4. Streptococcus genus in 1 study Healthy 67% chronic hepatitis B 90%

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 China.
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 · 91 genera

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

No meaningful difference · 91
PubMed · human studies and reviews first

Recent research

All research on it
  1. The Journal of infectious diseases · 2026
    Oral Microbiome Diversity Matters on Nucleos(t)ide Analogue Cessation in Chronic Hepatitis B.
    PubMed ↗
  2. Microbial pathogenesis · 2025
    Unraveling the causal relationship between gut microbiota and chronic hepatitis B: A large-scale mediation Mendelian randomization analysis.
    PubMed ↗
  3. Observational Journal of medical virology · 2025
    Reduction of Bacteroides fragilis in Gut Microbiome of Chronic Hepatitis B Patients Promotes Liver Injury.
    PubMed ↗
  4. Frontiers in public health · 2024
    A Mendelian randomization study investigating causal links between gut microbiota or metabolites and chronic hepatitis B.
    PubMed ↗
  5. Microbes and infection · 2023
    Human gut microbiota from hepatitis B virus-infected individuals is associated with reduced triglyceride level in mice: faecal transplantation study.
    PubMed ↗

Source: PubMed, U.S. National Library of Medicine · 8 linked papers, last 10 years