Efficacy and Safety of a Pentavalent Rotavirus Vaccine (BRV-PV) Against Severe Rotavirus Gastroenteritis in Niger

Summary

The study is a double-blinded, randomized, placebo-controlled, trial with two groups of infants receiving vaccine or placebo to assess the efficacy and safety of BRV-PV. Three doses of BRV-PV containing ≥ Log10 5.6 FFU/Dose of each serotype G1, G2, G3, G4 and G9 will be administered at 4 week intervals between doses. The first administration will occur at 6-8 weeks of age. We hypothesize a difference in vaccine efficacy of three doses of BRV-PV vaccine vs. placebo against severe rotavirus gastroenteritis in healthy infants in Niger. Active surveillance for gastroenteritis episodes will be conducted throughout the trial. Surveillance for adverse events will be carried out among all children from the time of first vaccination and 28 days post-Dose 3. Surveillance for all serious adverse events, including intussusception and death, will be conducted on all participants until they each reach two years of age. To assess the effect of prenatal nutrition supplementation on infant immune response to the BRV-PV vaccine, study villages in the immunogenicity sub-cohort will be randomized in a 1:1:1 ratio to provide pregnant women with daily iron-folate, multiple micronutrients or a lipid-based nutrition supplement. Infants of participating women, if eligible at 6-8 weeks of age, will be randomized in a 1:1 ratio to receive three doses of vaccine or placebo and enter the main trial as part of the immunogenicity sub-cohort.

Timeline

Start

2014-06

Primary completion

2015-12

Completion

2020-12-31

Publications

• Sudfeld CR, Bliznashka L, Salifou A, Guindo O, Soumana I, Adehossi I, Langendorf C, Grais RF, Isanaka S. Evaluation of multiple micronutrient supplementation and medium-quantity lipid-based nutrient supplementation in pregnancy on child development in rural Niger: A secondary analysis of a cluster randomized controlled trial. PLoS Med. 2022 May 2;19(5):e1003984. doi: 10.1371/journal.pmed.1003984. eCollection 2022 May.
• Kohlmann K, Sudfeld CR, Garba S, Guindo O, Grais RF, Isanaka S. Exploring the relationships between wasting and stunting among a cohort of children under two years of age in Niger. BMC Public Health. 2021 Sep 21;21(1):1713. doi: 10.1186/s12889-021-11689-6.
• Isanaka S, Garba S, Plikaytis B, Malone McNeal M, Guindo O, Langendorf C, Adehossi E, Ciglenecki I, Grais RF. Immunogenicity of an oral rotavirus vaccine administered with prenatal nutritional support in Niger: A cluster randomized clinical trial. PLoS Med. 2021 Aug 10;18(8):e1003720. doi: 10.1371/journal.pmed.1003720. eCollection 2021 Aug.
• Isanaka S, Langendorf C, McNeal MM, Meyer N, Plikaytis B, Garba S, Sayinzoga-Makombe N, Soumana I, Guindo O, Makarimi R, Scherrer MF, Adehossi E, Ciglenecki I, Grais RF. Rotavirus vaccine efficacy up to 2 years of age and against diverse circulating rotavirus strains in Niger: Extended follow-up of a randomized controlled trial. PLoS Med. 2021 Jul 2;18(7):e1003655. doi: 10.1371/journal.pmed.1003655. eCollection 2021 Jul.
• Isanaka S, Kodish SR, Mamaty AA, Guindo O, Zeilani M, Grais RF. Acceptability and utilization of a lipid-based nutrient supplement formulated for pregnant women in rural Niger: a multi-methods study. BMC Nutr. 2019 Jul 1;5:34. doi: 10.1186/s40795-019-0298-3. eCollection 2019.
• Coldiron ME, Guindo O, Makarimi R, Soumana I, Matar Seck A, Garba S, Macher E, Isanaka S, Grais RF. Safety of a heat-stable rotavirus vaccine among children in Niger: Data from a phase 3, randomized, double-blind, placebo-controlled trial. Vaccine. 2018 Jun 14;36(25):3674-3680. doi: 10.1016/j.vaccine.2018.05.023. Epub 2018 May 8.
• Isanaka S, Guindo O, Langendorf C, Matar Seck A, Plikaytis BD, Sayinzoga-Makombe N, McNeal MM, Meyer N, Adehossi E, Djibo A, Jochum B, Grais RF. Efficacy of a Low-Cost, Heat-Stable Oral Rotavirus Vaccine in Niger. N Engl J Med. 2017 Mar 23;376(12):1121-1130. doi: 10.1056/NEJMoa1609462.

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