The vaccine spike protein doesn’t stay confined to the injection site and it persists much longer than was advertised. From Megan Redshaw at The Epoch Times via zerohedge.com:
Scientists in a new paper detected spike protein in the bloodstream of people with long COVID two months after infection and COVID-19 vaccination, suggesting that spike protein may persist in the body much longer than previously predicted and does not remain at the injection site.

The study, published Dec. 27 in the European Review for Medical and Pharmacological Sciences, found vaccine spike protein in two patients at least two months after receiving their second dose of a COVID-19 vaccine and viral spike protein in one subject who previously recovered from infection in a cohort of 81 patients with long COVID syndrome. Samples gathered from the unvaccinated control group were negative for spike protein.
“This study, in agreement with other published investigations, demonstrates that both natural and vaccine spike protein may still be present in long-COVID patients, thus supporting the existence of a possible mechanism that causes the persistence of spike protein in the human body for much longer than predicted by early studies,” the authors wrote.
Although U.S. regulatory agencies claim vaccinating against COVID-19 can reduce the risk of developing long COVID, some research suggests the condition may be caused by an immune overreaction to the spike protein in COVID-19 vaccines used to induce antibodies.