1. 
   Microbe Spirochaetota

   Spirochaeta NameName close to Spirochaetales
2. 
   Microbe Spirochaetota

   Sediminispirochaeta NameName close to Spirochaetales
3. 
   Microbe Spirochaetota

   Sphaerochaeta KeywordIts page mentions Spirochaetales
4. 
   Microbe Spirochaetota

   Exilispira KeywordIts page mentions Spirochaetales
5. 
   Microbe Bacillota

   Thomasclavelia spiroformis MeaningAbout Spirochaetales
   18% of healthy people
6. 
   Microbe Bacillota

   Hydrogenoanaerobacterium saccharovorans MeaningAbout Spirochaetales
   43% of healthy people
7. 
   Microbe Spirochaetota

   Treponema MeaningAbout Spirochaetales
   under 1% of healthy people
8. 
   Microbe Spirochaetota

   Borreliella garinii KeywordIts page mentions Spirochaetales
   under 1% of healthy people
9. 
   Microbe Spirochaetota

   Salinispira KeywordIts page mentions Spirochaetales
10. 
    Microbe Mycoplasmatota

    Spiroplasma MeaningAbout Spirochaetales
11. Research Comprehensive physiology · 2026

    The Role of Fecal Microbiome Transplantation in Steroid Hyporesponsive Asthma.

    Faecalibacterium prausnitziiAkkermansia muciniphila

    MeaningAbout Spirochaetales
    PubMed ↗
12. 
    Microbe Spirochaetota

    Treponema succinifaciens MeaningAbout Spirochaetales
    under 1% of healthy people
13. Research The Journal of steroid biochemistry and molecular biology · 2019

    Bacterial steroid-17,20-desmolase is a taxonomically rare enzymatic pathway that converts prednisone to 1,4-androstanediene-3,11,17-trione, a metabolite that causes proliferation of prostate cancer cells.

    [Clostridium] scindens

    MeaningAbout Spirochaetales
    PubMed ↗
14. 
    Microbe Pseudomonadota

    Steroidobacteraceae MeaningAbout Spirochaetales
15. 
    Microbe Bacteroidota

    Spirosoma MeaningAbout Spirochaetales
    under 1% of healthy people
16. Research Frontiers in microbiology · 2020

    Novel Odoribacter splanchnicus Strain and Its Outer Membrane Vesicles Exert Immunoregulatory Effects in vitro.

    Odoribacter splanchnicus

    MeaningAbout Spirochaetales
    PubMed ↗
17. 
    Microbe Spirochaetota

    Borreliella KeywordIts page mentions Spirochaetales
    under 1% of healthy people
18. Research Therapeutic advances in gastroenterology · 2023

    Phylogenetic analysis of Prevotella copri from fecal and mucosal microbiota of IBS and IBD patients.

    Segatella copri

    MeaningAbout Spirochaetales
    PubMed ↗
19. Research Scientific reports · 2023 Animal study

    Dietary seaweed (Saccharina latissima) supplementation in pigs induces localized immunomodulatory effects and minor gut microbiota changes during intestinal helminth infection.

    Segatella copri

    MeaningAbout Spirochaetales
    PubMed ↗
20. Research Biochemistry · 2026

    Gut Bacterial 20-Hydroxysteroid Dehydrogenases Modify Endogenous Glucocorticoids and Corticosteroid Drugs.

    Bifidobacterium adolescentis[Clostridium] scindens

    MeaningAbout Spirochaetales
    PubMed ↗
21. Research Current microbiology · 2018

    Altered Profiles of Gut Microbiota in Klebsiella pneumoniae-Induced Pyogenic Liver Abscess.

    Klebsiella pneumoniae

    MeaningAbout Spirochaetales
    PubMed ↗
22. Research Cell · 2024

    Gut bacteria convert glucocorticoids into progestins in the presence of hydrogen gas.

    Eggerthella lenta

    MeaningAbout Spirochaetales
    PubMed ↗
23. 
    Microbe Ascomycota

    Sphaerulina MeaningAbout Spirochaetales
24. Research Antioxidants · 2026

    Sphallerocarpus gracilis Polyphenols Alleviate DSS-Induced Colitis by Remodeling Gut Microbiota and Inhibiting the AGE-RAGE/HMGB1 Pathway.

    Akkermansia muciniphila

    MeaningAbout Spirochaetales
    PubMed ↗
25. Research Cellular and molecular life sciences · 2025 Review

    Ferroptosis and gut microbiota: A new horizon in alcohol-associated liver disease management.

    Enterococcus faecalis

    MeaningAbout Spirochaetales
    PubMed ↗
26. Research Medical sciences · 2024 Observational

    Beneficial Bacteria in the Gut Microbiota May Lead to Improved Metabolic and Immunological Status in Chronic Obstructive Pulmonary Disease.

    Akkermansia muciniphila

    MeaningAbout Spirochaetales
    PubMed ↗
27. 
    Microbe Bacillota

    Sporanaerobacter MeaningAbout Spirochaetales
28. 
    Microbe Cyanobacteriota

    Arthrospira MeaningAbout Spirochaetales
29. Research Microorganisms · 2026

    Features of the Intestinal and Respiratory Microbiome in Colorectal Cancer Patients in Western Siberia.

    Bacteroides fragilis

    MeaningAbout Spirochaetales
    PubMed ↗
30. Research Cellular & molecular immunology · 2022

    A high-fiber diet synergizes with Prevotella copri and exacerbates rheumatoid arthritis.

    Segatella copri

    MeaningAbout Spirochaetales
    PubMed ↗
31. Research Genes · 2025

    Characterizing Gene-Level Adaptations in the Gut Microbiome During Viral Infections: The Role of a Fucoidan-Rich Extract.

    Bifidobacterium adolescentisAkkermansia muciniphila

    MeaningAbout Spirochaetales
    PubMed ↗
32. Research Cell reports. Medicine · 2026

    Multi-faceted characterization of the gut microbiome and metabolome in patients with primary Sjögren syndrome.

    Streptococcus parasanguinisVeillonella parvulaLigilactobacillus salivarius

    MeaningAbout Spirochaetales
    PubMed ↗
33. 
    Microbe

    Sphaerastrum MeaningAbout Spirochaetales
34. Research Women's health reports · 2024

    Gut Akkermansia muciniphila, Prevotellaceae, and Enterobacteriaceae spp. as Possible Markers in Women-Related Nutritional and Clinical Trials: Familial Mediterranean Fever Disease.

    Akkermansia muciniphila

    MeaningAbout Spirochaetales
    PubMed ↗
35. Research Nature communications · 2020 Observational

    Disease-associated gut microbiome and metabolome changes in patients with chronic obstructive pulmonary disease.

    Streptococcus parasanguinis

    MeaningAbout Spirochaetales
    PubMed ↗
36. Research Microbiology spectrum · 2023

    Bacteroides thetaiotaomicron, a Model Gastrointestinal Tract Species, Prefers Heme as an Iron Source, Yields Protoporphyrin IX as a Product, and Acts as a Heme Reservoir.

    Bacteroides thetaiotaomicron

    MeaningAbout Spirochaetales
    PubMed ↗
37. Research bioRxiv · 2026

    Longitudinal Changes in Nasal and Oral Microbiome and Antimicrobial Resistance Gene Profiles in Response to Human Fecal Microbiota Transplantation.

    Klebsiella pneumoniae

    MeaningAbout Spirochaetales
    PubMed ↗
38. Research Nature communications · 2020

    Abiraterone acetate preferentially enriches for the gut commensal Akkermansia muciniphila in castrate-resistant prostate cancer patients.

    Akkermansia muciniphila

    MeaningAbout Spirochaetales
    PubMed ↗
39. Research Allergy · 2023

    Haemophilus influenzae and Moraxella catarrhalis in sputum of severe asthma with inflammasome and neutrophil activation.

    Haemophilus parainfluenzae

    MeaningAbout Spirochaetales
    PubMed ↗
40. Research Microbiology resource announcements · 2025

    Draft genomes of Klebsiella pneumoniae and Streptococcus anginosus strains found in the urine of the same female patient.

    Klebsiella pneumoniae

    MeaningAbout Spirochaetales
    PubMed ↗

Research: PubMed, U.S. National Library of Medicine · citations link to PubMed