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The Special Issue entitled "Innovations Advancing Vaccine Preparedness and Response Capabilities to Counter Pandemic Influenza" was withdrawn on 09 January 2026. Consequently, the publications in this Special Issue have been removed from the associated webpage. They remain available in the regular issue(s) in which they were originally published. The Editorial Office confirms that these articles adhered to MDPI's standard editorial process (https://www.mdpi.com/editorial_process) and have been marked accordingly to ensure full transparency.