Decision making process, programmatic and logistic impact of the transition from a single-dose vial to a multi-dose vial of the 13-valent pneumococcal vaccine in Benin.

Background: Benin, a country eligible for Gavi support, changed the presentation of the 13-valent pneumococcal vaccine (PCV13) from the single-dose vial (SDV) to the multi-dose vial (MDV). The present work aims to evaluate the process of making this decision as well as programmatic and logistic impacts.

Methods: WHO protocol for post-introduction evaluation (PIE) was used.