“Meningococcal meningitis is one of the leader causes of death in young adults. You see it frequently in the college setting. It’s why there are vaccines against this nasty bacteria that also saves lives.”
So there are vaccines for bacteria???
Yes
Scroll down to the section Vaccines.
https://www.mayoclinic.org/diseases-conditions/meningitis/symptoms-causes/syc-20350508
That is what penicillin was invented for in the first place.