The whole article is well worth reading but here is the bottom line from a gold standard research project:
“This work reveals for the first time that early HBV vaccination induces impairments in behavior and hippocampal neurogenesis. This work provides innovative data supporting the long suspected potential association of HBV with certain neuropsychiatric disorders such as autism and multiple sclerosis.”
https://worldmercuryproject.org/news/vax-unvax-study-of-mice-implicates-hepatitis-b-vaccine-media-silent/
https://worldmercuryproject.org/news/vax-unvax-study-of-mice-implicates-hepatitis-b-vaccine-media-silent/