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RecruitingNCT04801862Updated Sep 17, 2026

Natural History of Clostridioides Difficile Infection

An observational study in Clostridium Difficile Infection, Health Care Associated Infection and Nosocomial Infection, sponsored by Hospital Universitario de Valme. Recruiting at 15 sites in Spain. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-17.

Sponsored by Hospital Universitario de Valme · Observational

From the registry’s dates

  • Started Jan 2021; still recruiting 5 years 10 months later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
750
Ages
18 Years and older
Sex
All
01

Study summary

Aim: To investigate if host factors, such as composition and diversity of intestinal microbiota and/or genetic determinants, are associated with a higher risk of recurrence of Clostridioides difficile infection (CDI). To generate a predictive tool based on epidemiological, clinical, genetic and microbiologic variables aimed to identify patients at a higher risk of CDI recurrence in a context of optimized ICD management. Design: Multicenter prospective cohort study. Patients: Older than 18 years patients with CDI diagnosis, made by IDSA criteria, in the participant centers.

Follow-up: A stewarship program aimed to improve CDI management, including early detection of CDI recurrence, will be implemented in the participant centers. Blood samples for genetic testing and stool samples for intestinal microbiome studies will be collected.

Variables and data analysis: The primary outcome variable will be the emergence of CDI recurrence. Potential independent predictors of recurrence, including genetic and microbiological factors, will be assessed. A predictive tool based on independent predictors of recurrence will be built in a development subpopulation. The performance of the model will be assessed by ROC curves, and sensititvity, especificity, as well as negative and positive predictive values will be calculated, both in the development subpopulation and in a validation subset.

02

Conditions studied

  • Clostridium Difficile Infection
  • Health Care Associated Infection
  • Nosocomial Infection

Keywords

  • Clostridioides difficile
  • Clostridium difficile
  • Nosocomial diarrhea
  • Health care associated infection
  • Nosocomial infection
  • Antimicrobial stewardship
03

In context

Clostridium Infections

251 studies on the registry are indexed under Clostridium Infections; 51 are open to participants now.

This study's planned enrollment of 750 is above the median of 226 across 52 observational studies indexed under Clostridium Infections.

Browse Clostridium Infections studies →

Lead sponsor

Hospital Universitario de Valme is the lead sponsor of 8 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Adult patients diagnosed of Clostridoides difficile infection

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age older than 18 years
  • New episode of Clostridioides difficile infection, based on IDSA criteria.

Exclusion criteria

Exclusion Criteria:

- None

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
750 participants (estimated)
Target follow-up
24 Months
Patient registry
Yes
Biospecimen retention
Samples with dna

Groups and cohorts

  • Patients diagnosed of C.difficile infection

    Open cohort of consecutive patients diagnosed of Clostridioides difficile infection

06

What researchers measure

Primary outcomes

  1. CDI recurrence

    Clostridioides difficile recurrence

    Time frame: First 8 weeks after end of therapy

  2. CDI reinfection

    New episode of Clostridioides difficile infection

    Time frame: Between 8 weeks after end of therapy and before 24 weeks

Secondary outcomes

  1. Readmission due to CDI infection

    New hospitalization related to new Clostridioides difficile infection episode

    Time frame: During 24 weeks after the end of therapy

07

Study locations

12 of 15 sites recruiting
  • Hospital Universitario San Juan
    Alicante, Alicante, Spain
    Recruiting
    • Francisco Jover · Contact
    • Francisco Jover · Principal investigator
  • Hospital Vega Baja
    Orihuela, Alicante, Spain
    Recruiting
    • María García · Contact
    • María García · Principal investigator
  • Hospital Marina Baixa
    Villajoyosa, Alicante, Spain
    Recruiting
    • Concepción Gil · Contact
    • Concepción Gil · Principal investigator
  • Hospital Universitario de Puerto Real
    Puerto Real, Cadiz, Spain
    Terminated

    Not enrolling at this site.

  • Hospital Universitario San Cecilio
    Granada, Granada, Spain
    Recruiting
    • Emilio Guirao · Contact
    • Emilio Guirao · Principal investigator
  • Hospital Juan Ramón Jiménez
    Huelva, Huelva, Spain
    Recruiting
    • Francisco J. Martínez Marcos · Contact
    • Francisco J. Martínez Marcos · Principal investigator
  • Hospital Regional Universitario de Málaga
    Málaga, Málaga, Spain
    Withdrawn

    Not enrolling at this site.

  • Hospital Universitario Virgen de la Victoria
    Málaga, Málaga, Spain
    Recruiting
    • Cristina Gómez Ayerbe · Contact
    • Cristina Gómez Ayerbe · Principal investigator
  • Consorcio Hospital General de Valencia
    Valencia, Valencia, Spain
    Recruiting
    • Vicente Abril · Contact
    • Vicente Abril · Principal investigator
  • Hospital Clínico Universitario de Valencia
    Valencia, Valencia, Spain
    Recruiting
    • Rosa Oltra · Contact
    • Rosa Oltra · Principal investigator
  • Hospital Politécnico Universitario La Fe de Valencia
    Valencia, Valencia, Spain
    Recruiting
    • Maria Tasias · Contact
    • Maria Tasias · Principal investigator
  • Hospital General Universitario de Alicante
    Alicante, Spain
    Recruiting
    • Esperanza Merino · Contact
    • Juan Carlos Rodríguez · Principal investigator
    • Esperanza Merino · Principal investigator
    • Maria Paz Ventero · Sub investigator
  • Hospital Universitario Reina Sofía
    Córdoba, Spain
    Terminated

    Not enrolling at this site.

  • Hospital Universitario de Valme
    Seville, Spain
    Recruiting
    • Rocío Herrero · Contactmariar.herrero@juntadeandalucia.es
    • Nicolás Merchante · Principal investigator
    • Marta Trigo Rodríguez · Sub investigator
    • Rocío Herrero · Sub investigator
    • Miguel Rodríguez Fernández · Sub investigator
    • Maria Dolores Valverde-Fredet Ruiz · Sub investigator
    • Ana I. Aller García · Sub investigator
    • Eva M. León Jiménez · Sub investigator
    • Pedro M. Martínez Pérez-Crespo · Sub investigator
    • Reinaldo Espíndola Gómez · Sub investigator
    • Juan E. Corzo Delgado · Sub investigator
    • Joaquín F. Lanz · Sub investigator
    • Lucía Valiente de Santis · Sub investigator
    • Antonio Fernández Pevida · Sub investigator
  • Hospital Universitario Virgen Macarena
    Seville, Spain
    Recruiting
    • Virginia Palomo · Contact
    • Miguel Nicolás Navarrete · Principal investigator
08

References and documents

Publications

  • Merchante N, Herrero R, Valverde-Fredet MD, Rodriguez-Fernandez M, Pinagorte H, Martinez-Marcos FJ, Gil-Anguita C, Garcia-Lopez M, Tasias Pitarch M, Abril Lopez De Medrano V, Navarrete Lorite MN, Gomez-Ayerbe C, Leon E, Gonzalez-De La Aleja P, Ruiz Castillo A, Aller AI, Rodriguez JC, Ternero Fonseca J, Corzo JE, Naranjo Perez A, Trigo-Rodriguez M, Merino E. Role of previous systemic antibiotic therapy on the probability of recurrence after an initial episode of Clostridioides difficile infection treated with vancomycin. JAC Antimicrob Resist. 2023 Mar 23;5(2):dlad033. doi: 10.1093/jacamr/dlad033. eCollection 2023 Apr. PubMed 36968953 ↗
  • Merchante N, Chico P, Marquez-Saavedra E, Riera G, Herrero R, Gonzalez-de-la-Aleja P, Aller AI, Rodriguez JC, Rodriguez-Fernandez M, Ramos JM, Trigo-Rodriguez M, Merino E. Impact of COVID19 pandemic on the incidence of health-care associated Clostridioides difficile infection. Anaerobe. 2022 Jun;75:102579. doi: 10.1016/j.anaerobe.2022.102579. Epub 2022 Apr 30. PubMed 35500744 ↗
  • Ventero MP, Valverde-Fredet MD, Merino E, Herrero R, Germak IT, Rodriguez-Fernandez M, Ramos-Rincon JM, Garcia M, Delgado-Sanchez E, Navarrete-Lorite MN, Gil C, Tasias M, Caston JJ, Vinuesa-Garcia D, Gomez-Ayerbe C, Marcos FJM, Merchante N, Rodriguez JC. Antimicrobial Susceptibility of Clostridioides difficile in Spain: Multicenter Retrospective Cohort Study. Antibiotics (Basel). 2026 Feb 2;15(2):145. doi: 10.3390/antibiotics15020145. PubMed 41750443 ↗
  • Rodriguez-Fernandez M, Herrero R, Gonzalez-De-La-Aleja P, Valverde-Fredet MD, Ventero MP, Trigo-Rodriguez M, Giner L, Aller-Garcia AI, Pinargote-Celorio H, Espindola-Gomez R, Parra M, Martinez Perez-Crespo P, Ramos-Rincon JM, Fernandez-Pevida A, Lanz-Garcia J, Leon E, Valiente-De-Santis L, Corzo JE, Rodriguez JC, Merino E, Merchante N. Clinical Impact of Implementing a Specific Clinical Pathway for the Management of Clostridioides difficile Infection. Infect Dis Ther. 2026 Jan;15(1):85-100. doi: 10.1007/s40121-025-01261-9. Epub 2025 Nov 7. PubMed 41201562 ↗

Individual participant data

Plan to share: Undecided

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 17, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04801862
Lead sponsor
Hospital Universitario de Valme
Responsible party
Nicolás Merchante (Coordinator of the UCEIM-HUV Research Group, Hospital Universitario de Valme) — Principal investigator
First posted
Mar 17, 2021
Start date
Jan 1, 2021
Primary completion
Dec 31, 2029 (estimated)
Completion
Dec 31, 2029 (estimated)
Last update
Sep 17, 2026

Study contacts

Nicolás Merchante, MD; PhD
Contact
nicolas.merchante.sspa@juntadeandalucia.es
955015895
Miguel Rodríguez Fernández
Contact
migrodfer92@gmail.com
955015895

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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