Ahhhh, my wife developed rheumatiod arthritis, a chronic condition due to an extra strength flu shot. She has to take methotrexate for the rest of her life which inhibits her auto immune systen the fights off infections. So minor infections are more difficult to deal with.
Flu shots are a gamble. The US govermnent passed PREPA, a law shielding the drug companies from liability after GWB was subjected to ritual defamation because of a vaccine shortage.
If you research this you will find information that says vaccines won't cause RA but her doctor said the flu shot caused it. Not an adjuvant but the vaccine itself.