Definition of "immunization" []

• The process by which an individual is exposed to a material that is designed to prime his or her immune system against that material. (noun)
• One such exposure. (noun)

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• "The word immunization comes from the Latin word Immunes, referring to “a group of soldiers who once having fought and survived a battle never had to fight again.”"
• "Unless we all want to take Tamiflu continuously, immunization is the only answer."
• "In 2004, for example, vaccine production fell behind, causing a 40 percent drop in immunization rates."