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.





