There are viral, fungal, and bacterial meningitis. The vaccines only protect against a few bacteria, and not too well.
Did you know that a highly infective Meningococcal strain has become more common because the MenACWY vaccine does not have a major effect on it?
“Our data suggest that the MenW component of MenACWY does not have a significant impact on MenW carriage or does so at a lower level as compared to the MenY component…. In conclusion, we show that the hypervirulent 2013-strain of the South American–United Kingdom MenW:cc11 sublineage was responsible for an increase in group W carriage reported at a United Kingdom university.”
"Vaccines are like a box of chocolates. You never know what you're gonna get - acute hemorrhagic edema of infancy, allergies, anaphylaxis, asthma, autoimmune disease, diabetes, eczema, petit/gran mal seizures, fibromyalgia, Henoch-Schonlein purpua, Dravet's Syndrome, Retts Syndrome, Sweet's Syndrome, Hughes Syndrome, encephalitis, speech delay, tics, neurological damage, coma, ADEM, ADHD, AFP, ASIA, CFS, CRPS, GBS, ITP, JPA, JRA, LGS, LKS, MS, ORS, PANDAS, PANS, PINTANDS, POF, POTS, RA, SIDS, SJS, SLE, SPD, SUDS, TPI, the disease one is being vaccinated against, or death."
Paraphrased from "Forrest Gump".
List from the drug companies' own package inserts that come with their product as required by law.