Hope this helps xox :)
Medical Definition of Vaccination. Vaccination: Injection of a killed microbe in order to stimulate the immune system against the microbe, thereby preventing disease. ... To immunize against viral diseases, the virus used in the vaccine has been weakened or killed.
The worst thing you could possibly do is commit suicide! Therapist help and support from loved ones (along with medication) is a great way of going about treating these things. And if you need help with something like this, SAY SOMETHING! Seek help! Otherwise you might do something unfortunate...