Preparedness 101: Zombie Pandemic (2011). Credit: U.S. Centers for Disease Control and Prevention (CDC), Office of Public Health Preparedness and Response. Public domain in the U.S. as a U.S. government work; Internet Archive item marked Public Domain Mark 1.0. CDC catalog: https://stacks.cdc.gov/view/cdc/6023 ; source file: https://archive.org/details/ZombieGraphicNovel
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