Acquired immunity is characterized by memory and is pathogen-specific, whereas innate immunity is the body's first line of natural, non-specific defense.
Step 1: Innate immunity is non-specific defense that is present at the time of birth (e.g., skin, mucus, stomach acid). Step 2: Vaccination provides acquired (adaptive) immunity because it involves the administration of an antigen to stimulate the body's immune system to recognize a specific pathogen. Step 3: It relies on the property of "memory" of the immune system to protect the individual during future exposures.