Understanding the Relationship between Vaccine Supply Dead Space and Wasted COVID-19 Vaccine Doses

ABSTRACT Introduction: By July 2023, Brazil had administered approximately 540 million COVID-19 vaccine doses. This study aimed to quantify wasted doses resulting from dead space in vaccine supplies. Methods: The vaccine supply was initially weighed, filled with distilled water, and expelled to simu...

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Bibliographic Details
Published in:Revista da Sociedade Brasileira de Medicina Tropical
Main Authors: Yago Marcos Pessoa-Gonçalves, Ana Lucia Gonçalves de Jesus, Chamberttan Souza Desidério, Gabrielly Amanda Minchio, Arthur de Sousa Louzada, Marcos Massao Shimano, Carlo José Freire Oliveira
Format: Article in Journal/Newspaper
Language:English
Published: Sociedade Brasileira de Medicina Tropical (SBMT) 2023
Subjects:
Dead Space
Needles
Residual volume
Syringes
Vaccine Supplies
Arctic medicine. Tropical medicine
RC955-962
Arctic
Online Access:https://doi.org/10.1590/0037-8682-0353-2023
https://doaj.org/article/2eb952b74f1e4e478c846916e7d5b463
Description
Summary:ABSTRACT Introduction: By July 2023, Brazil had administered approximately 540 million COVID-19 vaccine doses. This study aimed to quantify wasted doses resulting from dead space in vaccine supplies. Methods: The vaccine supply was initially weighed, filled with distilled water, and expelled to simulate administration. Weighing it again after the application determined the dead space volume. Descriptive analyses calculated the waste rate/wasted dose count. Results: The estimated total number of wasted vaccine doses using supplies with the lowest dead space was 62,097,338. Conclusions: Syringe dead space is a crucial factor in dose wastage, directly influencing the number of wasted doses.

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