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Evaluation of Buffer on Immune Response to Oral Polio Vaccine (OPV) in Bangladesh

This study has been completed.
World Health Organization
Information provided by (Responsible Party):
Johns Hopkins Bloomberg School of Public Health Identifier:
First received: April 16, 2012
Last updated: April 24, 2013
Last verified: April 2012


The immunogenicity of oral polio vaccine (OPV) will be enhanced in Bangladeshi infants who receive bicarbonate buffer at the time of polio immunization.

Condition Intervention
Polio Other: Buffer

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Evaluation of the Effect of Buffer on the Immune Response to Oral Poliovirus Vaccine in Bangladesh: a Randomized Controlled Trial

Resource links provided by NLM:

Further study details as provided by Johns Hopkins Bloomberg School of Public Health:

Primary Outcome Measures:
  • Serologic response [ Time Frame: 4 weeks after last dose of OPV ]
    Serologic response rate for each polio virus serotype (1, 2, and 3) in OPV.

Enrollment: 300
Study Start Date: April 2012
Study Completion Date: December 2012
Primary Completion Date: December 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Buffer Other: Buffer
5 ml of oral buffer solution containing 64 mg of sodium bicarbonate plus 24 mg of sodium citrate. The buffer will be administered prior to each dose of OPV at 6, 10 and 14 weeks of age.
No Intervention: Control

Detailed Description:
The investigators will conduct a study to evaluate the impact of administering bicarbonate buffer on the serologic responses to oral polio vaccine (OPV) in Bangladeshi infants.

Ages Eligible for Study:   up to 8 Weeks   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • infants who are 4-8 weeks old
  • residents of study area

Exclusion Criteria:

  • received a blood transfusion or any other blood product (such as immune globulin)
  • likely to move out of study area within the next four months
  • currently enrolled or planning to enroll in another study
  • major congenital malformations
  • neurologic disorders
  • immunodeficiency
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Please refer to this study by its identifier: NCT01579825

Sylhet, Bangladesh
Sponsors and Collaborators
Johns Hopkins Bloomberg School of Public Health
World Health Organization
Principal Investigator: Neal A Halsey, MD Johns Hopkins Bloomberg School of Public Health
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Johns Hopkins Bloomberg School of Public Health Identifier: NCT01579825     History of Changes
Other Study ID Numbers: IRB00003717
Study First Received: April 16, 2012
Last Updated: April 24, 2013 processed this record on September 21, 2017