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Ryoko Sato

Harvard T. H. Chan School of Public Health, Global Health and Population, Boston MA 02120, USA

Publications
  • Research   
    Relationship between Vaccine Stockouts and Vaccination Rate: Examination of Unique Administrative Data from Nigeria
    Author(s): Ryoko Sato*

    Background: Universal access to vaccines is crucial in protecting the population from deadly diseases. This study presents the prevalence of vaccine stockouts in Nigeria and examines the correlation between the vaccine stockouts and vaccine take-up. Methods: We use the unique administrative data of monthly vaccine stockouts at each health facility in Nigeria. To evaluate the correlation between the stockouts and the vaccine take-up, the administrative data was merged to Nigeria Demographic and Health Survey conducted in 2013. We used the logistic regression for the correlational study. Results: The prevalence of vaccine stockouts in Nigeria is high: 82.7 percent between 2012 and 2013. We find the negative correlation between vaccine stockouts and the vaccine take-up. However, we observe the differential correlati.. View more»

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