Let's assume for the sake of argument that 50% say there is no link between vaccines and brain problems (which is what encephalopathy means) although the real number would be more like 5-10%. But let's be conservative. That would leave 168,500 papers discussing the relationship between vaccination and damage to the brain.
Astoundingly, This is the Level of Pseudo Scientific Hokum Published by Mainstream Medical and Scientific Journals. In Plain English This Paper Says that Vaccines Did Not Cause Spasms (e.g, Seizures) in Infants Because These Previously Healthy Infants Were Destined to Develop Seizures Anyway! And Lancet, a Formerly Respectable Journal, Published It With a Straight Face!