primary response:
Programs the immune system to remember a particular disease agent by allowing it to "practice" on a weakened or killed version of the pathogen
Body may have a fever during this process
secondary response:
If a pathogen invades the body following a vaccine, the immune system can respond in a faster and greater magnitude than the primary response, which results in the creation of more antibodies to fight the pathogen and more memory cells to fight it in the future
