Interesting info: Virus-like particles and enterovirus antigen found in the brainstem neurons of Parkinson’s disease
ncbi.nlm.nih.gov/pmc/articl...
Every sample of the brain tissue taken from PwP had virus infection. Only one of the samples in the control group (presumably from healthy people) had virus infection the rest of them did not. The authors actually assumed that this one could be pre-clinical PD case. One would wonder why it took researchers this long to find it and why the virus theory of PD origin is not considered substantiated.