A One Health Study of Monkeypox Human Infection (AFRIPOX)

December 19, 2023 updated by: Institut Pasteur

A One Health Study of Monkeypox Human Infection, Animal Reservoir, Disease Ecology and Diagnostic Tools

This multidisciplinary project aim to understand the epidemiology of the monkeypox in Central African Republic through the identification of the animal reservoir, the clinical and epidemiological description of the human outbreak, through an ethnological approach around risk factors of the disease and through an ecological approach of the ecological context of emergence, and the improvement of biological diagnosis.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This project is composed by monkyepox disease outbreak investigation in the CAR following national surveillance framework.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
280

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

The populations concerned by the study correspond to the sedentary populations known as "Bantus" and the more mobile populations known as "pygmies. These populations belong to different ethno-linguistic groups with more or less specific forest uses and subsistence practices: some are slash-and-burn farmers (Ngbaka, Bagando, Monzombo), others are more mobile and traditionally hunter-gatherers, but now practice agriculture (Bayaka "Pygmies").

Translated with www.DeepL.com/Translator (free version)

Description

Inclusion Criteria:

  • Human population in villages affected by monkeypox epidemics: patients who developed monkeypox and their contacts
  • Health care personnel (paramedics, nurses, doctors) who work or have worked in affected villages
  • Traditional healers, diviners
  • Members of villages affected by past monkeypox epidemics

Exclusion Criteria:

  • area not accessible to investigation
  • refusal to participate
  • inability to obtain consent

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Control
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Risk factors transmission cases
Human cases of monkeypox confirmed by PCR
Other: blood samples
5 mL
Other: Scabs and pus samples
if available
Risk factors transmission contacts and co-exposures
Human contact of confirmed monkeypox cases
Other: blood samples
5 mL
Serological follow up cases
Human cases of monkeypox confirmed by PCR from Lobaye region
Other: blood samples
5 mL
Other: Scabs and pus samples
if available
Serological follow up contacts and co-exposures
Human contact of confirmed monkeypox cases from Lobaye region adjusted for age, month of the year and village of origin
Other: blood samples
5 mL

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Proportion of monkeypox cases occuring following interhuman exposures
Time Frame: 36 months
through a quantitative case-control study with an odds ratio of >3 for an exposure factor for human-to-human transmission.
36 months
Proportion of monkeypox cases occuring following zoonotic exposures
Time Frame: 36 months
through a quantitative case-control study with an odds ratio of >3 for an exposure factor for zoonotic transmission.
36 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Measurement of the Effective reproduction rate R in CAR according to the level of immunity (smallpox vaccine immunity or orthopoxvirus-related post disease immunity).
Time Frame: 36 months
measurement of the level of population natural immunity and post vaccinal immunity to determine the Effective reproduction rate R and changes in R between 2000-2020 according to the evolution of immunity (smallpox vaccine immunity or orthopoxvirus-related post disease immunity).
36 months
measurement of the sensitivity and the specificity of the existing diagnostic tests and those developed within the framework of the project
Time Frame: 36 months
sensitivity and specificity of the existing diagnostic tests and those developed within the framework of the project, as well as the reproducibility of measurements in relation to reference tests.
36 months
Identification and interpretation of genomic viral mutations from the viral sequences isolated from humans and animals in CAR for Phylogenetic and phylogeographic study of the monkeypox virus
Time Frame: 36 months
identification and interpretation of mutations, search for the common ancestor.
36 months
Comparison of genetic proximities between different viral strains isolated in humans and animals in CAR and neighboring countries since 1980.
Time Frame: 36 months
Comparison of genetic proximities
36 months
Identification of the characteristics associated with the environments in which human cases of monkeypox virus infection have occurred
Time Frame: 36 months
ecosystems and their recent modifications, land use, associated climatic/meteorological elements in the tropical zone (CAR, Northern DRC...).
36 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Institut Pasteur

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Institut Pasteur de Bangui

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 9, 2021

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2023

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2023

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 24, 2021

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 27, 2021

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 28, 2021

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 20, 2023

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 19, 2023

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2023

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2019-047

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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