Evaluation, Treatment and Monitoring of Patients With a Known or Suspected Parasitic Infection

NCT ID: NCT00001645

Last Updated: 2025-12-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

800 participants

Study Classification

OBSERVATIONAL

Study Start Date

1998-10-10

Brief Summary

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The purpose of this study is to evaluate, treat and follow patients with parasitic infections.

People with a known or suspected parasitic infection who are at least 1 year old may be enrolled. This study does not involve any experimental treatments.

Participants will have a physical examination and laboratory tests on blood, stool, or urine. Blood samples may be collected at regular intervals, but no more than 450 ml (15 ounces) of blood will be drawn from adults, and no more than 7 ml (1-1/2 teaspoons) per kg (2.2 pounds) of body weight from children, in any 6-week period. Other tests may include x-rays, electrocardiogram (EKG), or tissue biopsy (surgical removal of a small tissue sample), depending on the individual s condition.

Patients may be offered treatment or may be referred to another study that is more appropriate for the problem. Any treatment provided in this study will be according to standard medical practice for the patient s specific medical problem. Patients responses to treatment will be evaluated at regularly scheduled clinic visits. The length of time between visits and the total duration of the study for a given individual will be determined by the study doctor, based on that person s medical condition.

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Detailed Description

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This study is designed as a prospective study to evaluate and treat patients with parasitic infection. Patients with known or suspected parasitic infection will be enrolled and will be evaluated for the presence of a parasitic infection. Minimal studies scheduled for each visit will include a medical history, physical examination, routine laboratory tests, and specialized diagnostic procedures for possible parasitic infections. Treatment plans will be individualized for each patient's particular condition, and the number and length of additional visits and diagnostic evaluations will vary accordingly. Specific treatment regimens will be in accordance with standard medical practice.

Conditions

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Malaria Intestinal Worms GI Protozoa Echiniococcus Strongyloides

Keywords

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Helminth Infection Parasite Known Parasitic Infection Suspected Parasitic Infection Natural History

Study Design

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Observational Model Type

OTHER

Study Time Perspective

PROSPECTIVE

Study Groups

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Diarrhea GI parasite

Subjects infected with a GI parasite

No interventions assigned to this group

Echinococcus

Subjects infected with echinococcus

No interventions assigned to this group

Intestinal worm

Subjects infected with parasitic intestinal worm

No interventions assigned to this group

Malaria

Subjects infected with malaria

No interventions assigned to this group

Parasitic infection

Subjects infected with a parasitic infection that is not included in the other cohorts

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

Age 3 or over.

Access to a primary medical care provider outside of the NIH

Clinical evidence suggestive of a parasitic infection

Exclusion Criteria

Less than 3 years of age

No evidence suggestive of a parasitic infection
Minimum Eligible Age

3 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Institute of Allergy and Infectious Diseases (NIAID)

NIH

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Thomas B Nutman, M.D.

Role: PRINCIPAL_INVESTIGATOR

National Institute of Allergy and Infectious Diseases (NIAID)

Locations

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National Institutes of Health Clinical Center

Bethesda, Maryland, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Thomas B Nutman, M.D.

Role: CONTACT

Phone: (301) 496-5399

Email: [email protected]

Facility Contacts

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For more information at the NIH Clinical Center contact Office of Patient Recruitment (OPR)

Role: primary

References

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Nutman TB. Human infection with Strongyloides stercoralis and other related Strongyloides species. Parasitology. 2017 Mar;144(3):263-273. doi: 10.1017/S0031182016000834. Epub 2016 May 16.

Reference Type BACKGROUND
PMID: 27181117 (View on PubMed)

O'Connell EM, Nutman TB. Eosinophilia in Infectious Diseases. Immunol Allergy Clin North Am. 2015 Aug;35(3):493-522. doi: 10.1016/j.iac.2015.05.003.

Reference Type BACKGROUND
PMID: 26209897 (View on PubMed)

Nash TE, Ohl CA, Thomas E, Subramanian G, Keiser P, Moore TA. Treatment of patients with refractory giardiasis. Clin Infect Dis. 2001 Jul 1;33(1):22-8. doi: 10.1086/320886. Epub 2001 May 23.

Reference Type BACKGROUND
PMID: 11389490 (View on PubMed)

Corda M, Sciurba J, Blaha J, Mahanty S, Paredes A, Garcia HH, Nash TE, Nutman TB, O'Connell EM. A recombinant monoclonal-based Taenia antigen assay that reflects disease activity in extra-parenchymal neurocysticercosis. PLoS Negl Trop Dis. 2022 May 26;16(5):e0010442. doi: 10.1371/journal.pntd.0010442. eCollection 2022 May.

Reference Type DERIVED
PMID: 35617367 (View on PubMed)

Related Links

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Other Identifiers

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97-I-0096

Identifier Type: -

Identifier Source: secondary_id

970096

Identifier Type: -

Identifier Source: org_study_id