- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03313128
SaniVac Trial - Sanitation and Oral Rotavirus Vaccine Performance
SaniVac Trial: An Assessment of Oral Rotavirus Vaccine Performance Among Infants Enrolled in a Controlled Before-after Study in Low-income Neighbourhoods of Maputo, Mozambique
This is a controlled cohort study to assess the effect of improved sanitation on oral rotavirus vaccine performance in low-income urban neighbourhoods of Maputo, Mozambique. The specific hypotheses are that: (1) access to improved sanitation is associated with increased oral rotavirus vaccine immunogenicity; (2) enteric infection concurrent to oral rotavirus vaccination is associated with reduced oral rotavirus vaccine immunogenicity; and (3) Environmental Enteric Dysfunction is associated with reduced oral rotavirus vaccine immunogenicity.
Pregnant women will be enrolled from the intervention and control arms of a previous sanitation trial (NCT02362932) post-intervention and will be enrolled at no later than eight months' gestation and then followed to 4 months of age of the infant. Blood samples and faeces will be taken from the infant at the time of administration of the first dose of the oral rotavirus vaccine and four weeks after the second dose of the vaccine.
The primary outcome of interest in the study is oral rotavirus vaccine immunogenicity among participating vaccinated infants. Seroconversion is defined as a ≥ fourfold rise in serum anti-rotavirus IgA titers between first dose of oral RV vaccine and 4 weeks (+/- 1 week) after second dose of oral RV vaccine. Enteric infections are defined as the presence of ≥ 1 of the following enteric infections in stool: adenovirus 40/41, rotavirus A, norovirus GI/GII, Salmonella spp. (including serovars Typhi and Paratyphi), Campylobacter spp. (C. jejuni, C. coli, C. lari), Shigella spp. (S. boydii, S. sonnei, S. flexneri, S. dysenteriae), Clostridium difficile Toxin A/B, enterotoxigenic Escherichia coli (ETEC) LT/ST, E. coli O157, Shiga-like toxin-producing E. coli (STEC) stx1/stx2, Yersinia enterocolitica, Vibrio cholerae, Giardia lamblia, Entamoeba histolytica, and Cryptosporidium spp. (C. parvum, C. hominis). Environmental Enteric Dysfunction is measured via a combined disease activity score including faecal markers of intestinal inflammation and permeability: neopterin, α-1 antitrypsin, and myeloperoxidase in stool.
Study Overview
Status
Intervention / Treatment
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Contact
- Name: Oliver D Cumming, MSc
- Phone Number: +442076368636
- Email: oliver.cumming@lshtm.ac.uk
Study Locations
-
-
-
Maputo, Mozambique, 264
- Recruiting
- Centro de Investigação em Saúde da Polana Caniço (CISPOC)
-
Contact:
- Edna Viegas, MD
- Phone Number: +258 21 43 08 14
- Email: ednaviegas@gmail.com
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Mother residing in an intervention or control compound of a previous sanitation trial (NCT02362932) for at least 6 months prior to recruitment and not intending to switch study compound over the next 9 months
- Mother being pregnant and having gestational age between 3 and 9 months or being puerperal (up to 40 days postpartum)
- Mother planning to use the prenatal care, delivery and vaccination services provided by the Ministry of Health of Mozambique
- Mother able to understand and complete the informed consent process and allow your newborn to participate in the study
- Mother at least 16 years of age
- Infant eligible to receive rotavirus vaccination
Exclusion criteria:
- Infant whose medical team considers that they cannot be part of the study
- Infant with complications associated with gestation, childbirth or postpartum, including congenital malformations
- Infant with any medical, psychiatric or social condition, occupational reason, or other responsibility on the part of the pregnant woman, which, in the opinion of the investigator, is a contraindication to protocol compliance or impedes the participant's ability to give informed consent
- Infant who has already received the rotavirus vaccine
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Historic intervention
Infants born into the historic intervention arm of sanitation trial (NCT02362932)
|
Improved sanitation facility
|
Historic control
Infants born into the historic control arm of sanitation trial (NCT02362932)
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Oral rotavirus vaccine seroconversion
Time Frame: Approx. 16 weeks age of infant (4 weeks after second dose of oral rotavirus vaccine)
|
Seroconversion is defined as a ≥ fourfold rise in serum anti-rotavirus IgA titers between first dose of oral RV vaccine and 4 weeks (+/- 1 week) after second dose of oral RV vaccine
|
Approx. 16 weeks age of infant (4 weeks after second dose of oral rotavirus vaccine)
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Enteric infection
Time Frame: Approx. 8 weeks age of infant (date of first dose of oral rotavirus vaccine)
|
Enteric infections are defined as the presence of ≥ 1 of the following enteric infections in stool: adenovirus 40/41, rotavirus A, norovirus GI/GII, Salmonella spp.
(including serovars Typhi and Paratyphi), Campylobacter spp.
(C.
jejuni, C. coli, C. lari), Shigella spp.
(S. boydii, S. sonnei, S. flexneri, S. dysenteriae), Clostridium difficile Toxin A/B, enterotoxigenic Escherichia coli (ETEC) LT/ST, E. coli O157, Shiga-like toxin-producing E. coli (STEC) stx1/stx2, Yersinia enterocolitica, Vibrio cholerae, Giardia lamblia, Entamoeba histolytica, and Cryptosporidium spp.
(C.
parvum, C. hominis).
|
Approx. 8 weeks age of infant (date of first dose of oral rotavirus vaccine)
|
Environmental Enteric Dysfunction
Time Frame: Approx. 8 weeks age of infant (date of first dose of oral rotavirus vaccine)
|
EED is measured via a combined disease activity score including faecal markers of intestinal inflammation and permeability: neopterin, α-1-antitrypsin, and myeloperoxidase in stool.
|
Approx. 8 weeks age of infant (date of first dose of oral rotavirus vaccine)
|
Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Oliver D Cumming, MSc, London School of Hygiene and Tropical Medicine
- Principal Investigator: Edna Viegas, MD, Centro de Investigação em Saúde da Polana Caniço (CISPOC)
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- QA919
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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