A vaccine is designed to give you "protective immunity" to an infectious disease by "tricking" your immune system into reacting as if it was being assaulted by a deadly pathogen. What part of that concept sounds "safe" to you?
A vaccine is designed to give you "protective immunity" to an infectious disease by "tricking" your immune system into reacting as if it was being assaulted by a deadly pathogen. What part of that concept sounds "safe" to you?