Guillain-Barre probably results from metabolic problems absorbing nutrients in this day and age of highly processed and nutritionally "dead" food.   The problems occur because genetic anomalies are triggered that ultimately cause various immune dysfunctions, including problems with the myelin sheath protecting nerves.

Vaccination issues probably relate to something other than the actual vaccine.   It could be preservatives in multi-dose vials (thimerosal, which is derived from mercury) and it could be weakness in the immune system itself related to poor nutrition and environmental toxins (dirty air, water with lots of added chemicals).   Genetics can provide a lot of information about what the real issues are rather than having to guess.

Vaccines have saved hundreds of millions of lives.  Let's not bark up the wrong tree and vilify the vaccines themselves without considering all factors involved -- Multidose vaccine additives, environmental, nutritional, and genetic predisposition.