Immunogenicity of One Versus Two Doses of Killed Oral Cholera Vaccine

Status Completed

Clinical Trial Summary

The purpose of this study is to compare the safety and immunogenicity of one and two doses of the killed oral cholera vaccine.

Clinical Trial Description

Cholera is an important public health problem worldwide, particularly in endemic areas of the developing world. In 2004, 101 383 cholera cases and 2345 deaths were reported to the WHO. Provision of safe water and food, adequate sanitation and improved personal and community hygiene are the main public health interventions against cholera. These measures cannot be implemented in the near future in the most cholera-endemic areas.

Phase II trials of this reformulated killed oral cholera vaccine were performed in SonLa, Vietnam and Kolkata, India. Significant vibriocidal antibody responses were observed among vaccine recipients.

Distribution of 2 doses of the cholera vaccine is often difficult in field settings and limits its utility in emergency situations, since an interval of 2 weeks is usually required between doses. Recent data from Vietnam suggests that greater vibriocidal responses following 2 doses are elicited compared to previous formulations. Furthermore, in a study in Bangladesh comparing immune responses to the vaccine among children supplemented with vitamin A and zinc, seroconversion after the first dose was robust in all groups suggesting that one dose may be used in the control of cholera.

Data regarding the immune response following one dose of this reformulated vaccine is currently unavailable. If a single dose of this vaccine is confirmed to be immunogenic to recipients, then this vaccine may be used more extensively for public health purposes, especially during times of outbreaks.

The objective of this study is to confirm the safety of the killed oral cholera vaccine among adult and children volunteers. ;

Study Design

Allocation: Randomized, Endpoint Classification: Safety Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Prevention

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00419133
Study type	Interventional
Source	International Vaccine Institute
Contact
Status	Completed
Phase	Phase 2
Start date	June 2007
Completion date	August 2007

View Details

See also
Status	Clinical Trial	Phase
Completed	`NCT06283784` - Study To Evaluate The Efficacy of a Proprietary Mix of Live Probiotics In The Prophylaxis Of Diarrhea In Adult Patients	N/A
Recruiting	`NCT03851835` - Multi-DOSE Oral Ondansetron for Pediatric Acute GastroEnteritis	Phase 3
Completed	`NCT04003181` - The Pathogenesis of Chronic Diarrhoea After Treatment for Cancer in Cecum and the Ascending Colon	N/A
Completed	`NCT03596827` - The Protective Immune Response to Attenuated Enterotoxigenic Escherichia Coli Infection	N/A
Recruiting	`NCT05372068` - Cement flooRs AnD chiLd hEalth (CRADLE)	N/A
Completed	`NCT03972618` - Evaluation of the Efficacy of Sawyer Point One Filters in Schools and Homes in the Dominican Republic	N/A
Completed	`NCT05207618` - Utility of the Administration of Chesnut and Quebracho Extract for Irritable Bowel Syndrome Diarrhea Predominant	N/A
Not yet recruiting	`NCT05052489` - Registry and Clinical Observation of Children With Diarrhoeal Disease
Completed	`NCT02541695` - Characterization of Resistance Against Live-attenuated Diarrhoeagenic E. Coli	N/A
Completed	`NCT02428647` - Lao Zinc Study: Effects of Two Forms of Daily Preventive Zinc Versus Therapeutic Zinc Supplementation	N/A
Completed	`NCT02197780` - Head-to-head Comparison of Two Fecal Biomarkers to Screen Children for IBD	N/A
Completed	`NCT01968408` - Lactobacillus Reuteri DSM 17938 in Preventing Nosocomial Diarrhea in Children	Phase 3
Completed	`NCT01739231` - Live Attenuated ETEC Vaccine ACE527 With and Without dmLT Adjuvant in Adults	Phase 1/Phase 2
Terminated	`NCT01048567` - Efficacy and Safety of Lactobacillus Acidophilus/Rhamnosus Combination for the Prevention of Antibiotic-associated Diarrhea in the Elderly	Phase 2
Completed	`NCT01371656` - Levofloxacin in Preventing Infection in Young Patients With Acute Leukemia Receiving Chemotherapy or Undergoing Stem Cell Transplantation	Phase 3
Not yet recruiting	`NCT01382199` - Recombinant Human Lactoferrin Administered Orally for the Prevention of Antibiotic Associated Diarrhea in Adult Patients	Phase 3
Completed	`NCT01438645` - ScopeGuide-assisted Colonoscopy Versus Conventional Colonoscopy	N/A
Terminated	`NCT01472211` - Water-based Zinc Intervention Trial in Zinc Deficient Children	Phase 0
Completed	`NCT00914225` - Effect of Bednets and a Water Purification Device on HIV Disease Progression Among ART naïve Patients in Kenya	N/A
Completed	`NCT00760851` - Yogurt Study in Children 2-4 Years Old Attending Daycare	Phase 3