Cryptosporidiosis and Enteropathogens in Bangladesh

NCT ID: NCT02764918

Last Updated: 2025-03-30

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

ACTIVE_NOT_RECRUITING

Total Enrollment

150 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-10-01

Study Completion Date

2029-10-31

Brief Summary

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The purpose of this study is to explore the role of anti-parasite antibody in protection of children from the parasitic infection cryptosporidiosis. This work has the promise of identifying immune pathways important for protection from parasitic infections of the gut, and will help with designing a vaccine to prevent this infection estimated to cause, from diarrhea and malnutrition, an overall burden of 12 million disability-adjusted life-years in children.

Detailed Description

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Conditions

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Cryptosporidiosis

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Children

n=150

No interventions assigned to this group

Mothers

n=150

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* Mother willing to sign informed consent form.
* Healthy infant
* No obvious congenital abnormalities or birth defects.
* Stable household with no plans to leave the area for the next one year.

Exclusion Criteria

* Parents are not willing to have child's blood drawn.
* Parents are planning to enroll child into another interventional clinical study during the time period of this trial that could affect the outcomes of this study.
* Mother not willing to have blood drawn and breast milk extracted.
* Parents not willing to have field research assistant in home two times per week.
* History of seizures or other apparent neurologic disorders.
* Infant has any sibling currently or previously enrolled in this study, including a twin.
Minimum Eligible Age

1 Day

Maximum Eligible Age

7 Days

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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International Centre for Diarrhoeal Disease Research, Bangladesh

OTHER

Sponsor Role collaborator

National Institutes of Health (NIH)

NIH

Sponsor Role collaborator

University of Virginia

OTHER

Sponsor Role lead

Responsible Party

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William Petri, MD, PhD

Division Chief, Infectious Disease

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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The International Centre for Diarrhoeal Disease Research, Bangladesh

Dhaka, , Bangladesh

Site Status

Countries

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Bangladesh

References

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Gilchrist CA, Cotton JA, Burkey C, Arju T, Gilmartin A, Lin Y, Ahmed E, Steiner K, Alam M, Ahmed S, Robinson G, Zaman SU, Kabir M, Sanders M, Chalmers RM, Ahmed T, Ma JZ, Haque R, Faruque ASG, Berriman M, Petri WA. Genetic Diversity of Cryptosporidium hominis in a Bangladeshi Community as Revealed by Whole-Genome Sequencing. J Infect Dis. 2018 Jun 20;218(2):259-264. doi: 10.1093/infdis/jiy121.

Reference Type BACKGROUND
PMID: 29514308 (View on PubMed)

Steiner KL, Ahmed S, Gilchrist CA, Burkey C, Cook H, Ma JZ, Korpe PS, Ahmed E, Alam M, Kabir M, Tofail F, Ahmed T, Haque R, Petri WA Jr, Faruque ASG. Species of Cryptosporidia Causing Subclinical Infection Associated With Growth Faltering in Rural and Urban Bangladesh: A Birth Cohort Study. Clin Infect Dis. 2018 Oct 15;67(9):1347-1355. doi: 10.1093/cid/ciy310.

Reference Type BACKGROUND
PMID: 29897482 (View on PubMed)

Steiner KL, Kabir M, Priest JW, Hossain B, Gilchrist CA, Cook H, Ma JZ, Korpe PS, Ahmed T, Faruque ASG, Haque R, Petri WA. Fecal Immunoglobulin A Against a Sporozoite Antigen at 12 Months Is Associated With Delayed Time to Subsequent Cryptosporidiosis in Urban Bangladesh: A Prospective Cohort Study. Clin Infect Dis. 2020 Jan 2;70(2):323-326. doi: 10.1093/cid/ciz430.

Reference Type BACKGROUND
PMID: 31131855 (View on PubMed)

Donowitz JR, Drew J, Taniuchi M, Platts-Mills JA, Alam M, Ferdous T, Shama T, Islam MO, Kabir M, Nayak U, Haque R, Petri WA. Diarrheal Pathogens Associated With Growth and Neurodevelopment. Clin Infect Dis. 2021 Aug 2;73(3):e683-e691. doi: 10.1093/cid/ciaa1938.

Reference Type BACKGROUND
PMID: 33399861 (View on PubMed)

Donowitz JR, Pu Z, Lin Y, Alam M, Ferdous T, Shama T, Taniuchi M, Islam MO, Kabir M, Nayak U, Faruque ASG, Haque R, Ma JZ, Petri WA Jr. Small Intestine Bacterial Overgrowth in Bangladeshi Infants Is Associated With Growth Stunting in a Longitudinal Cohort. Am J Gastroenterol. 2022 Jan 1;117(1):167-175. doi: 10.14309/ajg.0000000000001535.

Reference Type BACKGROUND
PMID: 34693912 (View on PubMed)

Kabir M, Alam M, Nayak U, Arju T, Hossain B, Tarannum R, Khatun A, White JA, Ma JZ, Haque R, Petri WA Jr, Gilchrist CA. Nonsterile immunity to cryptosporidiosis in infants is associated with mucosal IgA against the sporozoite and protection from malnutrition. PLoS Pathog. 2021 Jun 28;17(6):e1009445. doi: 10.1371/journal.ppat.1009445. eCollection 2021 Jun.

Reference Type BACKGROUND
PMID: 34181697 (View on PubMed)

Carey MA, Medlock GL, Alam M, Kabir M, Uddin MJ, Nayak U, Papin J, Faruque ASG, Haque R, Petri WA, Gilchrist CA. Megasphaera in the Stool Microbiota Is Negatively Associated With Diarrheal Cryptosporidiosis. Clin Infect Dis. 2021 Sep 15;73(6):e1242-e1251. doi: 10.1093/cid/ciab207.

Reference Type BACKGROUND
PMID: 33684930 (View on PubMed)

Gilchrist CA, Campo JJ, Pablo JV, Ma JZ, Teng A, Oberai A, Shandling AD, Alam M, Kabir M, Faruque ASG, Haque R, Petri WA Jr. Specific Cryptosporidium antigens associate with reinfection immunity and protection from cryptosporidiosis. J Clin Invest. 2023 Aug 15;133(16):e166814. doi: 10.1172/JCI166814.

Reference Type BACKGROUND
PMID: 37347553 (View on PubMed)

Gilchrist CA, Petri WAO, Hossain B, Kabir M, So HH, Moreau GB, Nayak U, Ma JZ, Noor Z, Faruque ASG, Alam M, Haque R, Petri WA Jr. Decrease in Incidence of Diarrhea Due to Cryptosporidium in Bangladeshi Children Is Associated With an Increase in Anti-Cryptosporidium Antibody Avidity. J Infect Dis. 2025 Sep 15;232(3):e362-e371. doi: 10.1093/infdis/jiaf253.

Reference Type DERIVED
PMID: 40488529 (View on PubMed)

Carey M, Arju T, Cotton JA, Alam M, Kabir M, Faruque ASG, Haque R, Petri WA Jr, Gilchrist CA. Genomic Heterogeneity of Cryptosporidium parvum Isolates From Children in Bangladesh: Implications for Parasite Biology and Human Infection. J Infect Dis. 2023 Nov 2;228(9):1292-1298. doi: 10.1093/infdis/jiad257.

Reference Type DERIVED
PMID: 37832036 (View on PubMed)

Other Identifiers

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R01AI043596

Identifier Type: NIH

Identifier Source: secondary_id

View Link

PR13092

Identifier Type: -

Identifier Source: org_study_id

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