Malaria in Pregnancy Clinical Trial
Official title:
Long Term Follow-up of Immunological Pattern and Pregnancy Outcomes in Women Previously Enrolled in a Phase 1b Clinical Trial With the PRIMVAC Placental Malaria Candidate Vaccine
Study Population: Participants of the previous PRIMVAC vaccine trial and women aged 18 to 35 years Sample Size: 90 Study duration: 21 months Subject duration: 12 months if pregnancy doesn't occurred. In case of pregnancy, the participant will be followed up until the delivery. Study Design: Long term observational study comparing the immunology trend of 3 groups of i) women who received the PRIMVAC Vaccine or Placebo during the phase 1b trial in Burkina Faso; ii) women of the same age and nulligravid who did not participate in the phase 1b trial iii) women of the same age and primigravid who did not participate in the phase 1b trial Co Primary objectives - To assess the dynamics of humoral immune response to the vaccine antigen during long term follow up of the study participants - To evaluate the functional durability of the humoral immune responses of women who participated in the phase 1b vaccine trial compared to women of the same age Secondary objectives - To assess the cellular immune response during the follow-up period - To assess the incidence of clinical malaria on study participants - To assess the prevalence of Placental Malaria in study participants and adverse outcomes such as maternal anemia, low birth weight, stillbirth and prematurity.
It is a long-term observational study comparing the immunology trend of 3 groups of women: - Women who received the PRIMVAC Vaccine or Placebo during the phase 1b trial in Burkina Faso - Women of the same age and nulligravid who did not participate in the phase 1b trial - Women of the same age and primigravid who did not participate in the phase 1b trial The proposed cohort study will build on the previous phase 1b study which was conducted within the health district of Saponé (ClinicalTrials.gov Identifier: NCT02658253). The enrolment and follow up of the subjects will last 12 months. Pregnancy which occurred during the follow up period will monitored until the delivery. An additional six months is necessary for sample analysis in the laboratory, the data analysis and the preparation of reports and publications. ;
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