Merck Website - Vaccines are listed as a cause of encephalitis - brain inflammation, and meningitis
http://www.merckmanuals.com/home/brain-spinal-cord-and-nerve-disorders/brain-infections/encephalitis
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After certain viral infections or vaccines, the body’s immune system sometimes attacks the layers of tissue that wrap around nerve fibers (called the myelin sheath) in the brain and spinal cord The attack occurs because proteins in myelin resemble those in the virus. As a result, nerve transmission...
Overview of Meningitis
(For brain infections, see Brain Infections ; for neonatal meningitis, Neonatal Bacterial Meningitis .) Meningitis is inflammation of the meninges and subarachnoid space. It may result from infections, other disorders, or reactions to drugs. Severity and acuity vary. Findings typically...
