Compare and contrast: vaccines versus antibiotics mark each statement as true for either (v)vaccines or (a)antibiotics. a. work only against bacterial infections. b. work primarily against viral infections. c. immunity is provided by injecting a killed or live attenuated (weakened) type of pathogen into a person. the person’s own immune system then creates antibodies against that pathogen that keep them from becoming ill when they come in contact with it in the future. d. if used improperly, can cause bacteria to mutate and become resistant to the medication. e. work because of the types of memory cells in our immune system.