Explanation: your bodies immune system remebers past aliments in case it faces them again so a vaccine in your body helps your body build up immunity to the ailment before it overwelhms you like a guy took small amounts of black mamba venom until his immune sysste was so used to it he could take a bite and survive unscaved
In my opinion yes, because sometimes fictitious information can have information that may seem factual or possibly have something in it to make it look factual.