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    The potential effects of deploying SARS-Cov-2 vaccines on cold storage capacity and immunization workload in countries of the WHO African Region

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    Author
    Ortiz, Justin R
    Robertson, Joanie
    Hsu, Jui-Shan
    Yu, Stephen L
    Driscoll, Amanda J
    Williams, Sarah R
    Chen, Wilbur H
    Fitzpatrick, Meagan C
    Sow, Samba
    Biellik, Robin J
    Neuzil, Kathleen M
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    Date
    2021-02-19
    Journal
    Vaccine
    Publisher
    Elsevier Ltd.
    Type
    Article
    
    Metadata
    Show full item record
    See at
    https://doi.org/10.1016/j.vaccine.2021.02.037
    Abstract
    Background: SARS-CoV-2 vaccines will be deployed to countries with limited immunization systems. Methods: We assessed the effect of deploying SARS-Cov-2 vaccines on cold storage capacity and immunization workload in a simulated WHO African Region country using region-specific data on immunization, population, healthcare workers (HCWs), cold storage capacity (quartile values for national and subnational levels), and characteristics of an approved SARS-CoV-2 vaccine. We calculated monthly increases in vaccine doses, doses per vaccinator, and cold storage volumes for four-month SARS-CoV-2 vaccination campaigns targeting risk groups compared to routine immunization baselines. Results: Administering SARS-CoV-2 vaccines to risk groups would increase total monthly doses by 27.0% for ≥ 65 years, 91.7% for chronic diseases patients, and 1.1% for HCWs. Assuming median nurse density estimates adjusted for absenteeism and proportion providing immunization services, SARS-CoV-2 vaccination campaigns would increase total monthly doses per vaccinator by 29.3% for ≥ 65 years, 99.6% for chronic diseases patients, and 1.2% for HCWs. When we applied quartiles of actual African Region country vaccine storage capacity, routine immunization vaccine volumes exceeded national-level storage capacity for at least 75% of countries, but subnational levels had sufficient storage capacity for SARS-CoV-2 vaccines for at least 75% of countries. Conclusions: In the WHO African Region, SARS-CoV-2 vaccination campaigns would substantially increase doses per vaccinator and cold storage capacity requirements over routine immunization baselines. Pandemic vaccination campaigns would increase storage requirements of national-level stores already at their limits, but sufficient capacity exists at subnational levels. Immediate attention to strengthening immunization systems is essential to support pandemic responses. © 2021 The Authors
    Rights/Terms
    Copyright © 2021 The Authors. Published by Elsevier Ltd.. All rights reserved.
    Keyword
    Africa
    Delivery
    Immunization
    Implementation
    SARS-CoV-2
    COVID-19 Vaccines
    Identifier to cite or link to this item
    http://hdl.handle.net/10713/15052
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.vaccine.2021.02.037
    Scopus Count
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    UMB Open Access Articles
    UMB Coronavirus Publications

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