Japanese Scientists discover that repeated vaccination with mRNA COV-19 Vaccines induce high IgG4 levels, promoting cancer growth by suppressing cancer immunity and is associated with poor prognosis in Pancreatic Cancer Survival.

"The overall survival (OS) of PC patients was shortened in those vaccinated three times or more, and the total serum IgG4 levels increased with the number of vaccinations."

https://www.preprints.org/frontend/manuscript/4596461045ab13dc5db9d869b018d540/download_pub