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The COVID-19 vaccine distribution chain faced multiple challenges associated with the lack of production capacity, security issues, and miscommunication between different actors. Blockchain technology has been shown to solve the security and miscommunication issues in other industries. We first identify distribution chain challenges via literature review and primary interviews. Case studies which solved these challenges in other industries also served as a source. This information allowed us to devise a blockchain framework for the vaccine distribution chain and evaluate its application feasibility. We present the framework using data flow diagrams. The proposed framework helps minimize the circulation of counterfeit vaccines and vaccination records, improves communication between stakeholders in the distribution chain, increases supply chain security, and simplifies vaccine inventorying and handling processes.

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