Assessment of Biologic Parameters in Preparation for Future Malaria Vaccine Trials in Don gu Bougou, Mali

NCT ID: NCT00341783

Last Updated: 2009-01-07

Basic Information

• Recruitment Status: TERMINATED
• Total Enrollment: 515 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2002-07-31
• Study Completion Date: 2005-07-31

Brief Summary

There are about 300-500 million cases of malaria worldwide each year, with 2-3 million deaths. Plasmodium falciparum, one of four types of malaria, is responsible for most of these deaths. Because of increasing resistance of this parasite to drugs and of mosquitoes to insecticides, a vaccine would be valuable in the fight against malaria.

Don gu bougou, Mali, is an area of seasonal malaria transmission that is being investigated as a possible suitable site for testing investigational malaria vaccines. The goal of this study is to characterize the population of this site in terms of common hematologic (blood) and biochemistry parameters that may be used to determine eligibility for participation in vaccine trials. The study will also assess the prevalence of preexisting medical conditions that might affect assessments of vaccine safety and efficacy. Also, the natural immunity to antigens in the investigational malaria vaccines will be determined.

Don gu bougou, Mali, was chosen because of its high malaria rates. Data will be collected at four time-points. At least 50 individuals will be recruited from each of the following age groups: 6 months-5 years; 6-10 years; 11-15 years; and 16-45 years. Village-wide consent will be obtained and about 25 of the 111 family compounds will be randomly selected. Individual consent will also be obtained.

Enrolled volunteers will undergo a baseline medical history and physical examination. Blood will be collected for various tests, and, for women of childbearing age, urine pregnancy tests will be administered.

At each of three followup visits, a brief medical history and physical exam will be conducted. Blood will be drawn for tests. Also, blood, urine, and/or stool tests not done at baseline will be done at one of the followup visits.

Detailed Description

Doneguebougou, Mali, is an area of seasonal malaria transmission that is being investigated as a suitable site for testing investigational malaria vaccines. The overall goal of this study is to characterize the population of this site in terms of common hematologic and biochemistry parameters that may be used to determine eligibility for participation in vaccine trials, as well as in terms of preexisting medical conditions and preexisting immunity to potential malaria vaccine antigens, both of which might impact on the assessment of vaccine safety and efficacy. The development of high quality laboratory proficiency to assess these parameters in Mali will also be achieved by this study.

Conditions

Malaria

Eligibility Criteria

Inclusion Criteria

Males or females aged 6 months to 45 years.

Resident of Doneguebougou at the start of the study, and intent to remain a resident for the duration of the study.

Willingness to participate in the study as evidenced by the completed informed consent document.

Exclusion Criteria

Clinical evidence of acute life-threatening illness requiring immediate medical care.

• Maximum Eligible Age: 45 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

National Institute of Allergy and Infectious Diseases (NIAID)

NIH

Sponsor Role: lead

Locations

National Institute of Allergy and Infectious Diseases (NIAID)

Bethesda, Maryland, United States

Countries

United States

Related Links

http://clinicalstudies.info.nih.gov/detail/B_2002-I-N248.html

NIH Clinical Center Detailed Web Page

Other Identifiers

02-I-N248

Identifier Type: -

Identifier Source: secondary_id

999902248

Identifier Type: -

Identifier Source: org_study_id