Several Breads ago, an Anon posted an unsauced chart that seemed to indicate that flu shots increase the risk for Corona Virus. Found the 2012 article!

Increased Risk of Noninfluenza Respiratory Virus Infections Associated With Receipt of Inactivated Influenza Vaccine

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3404712/

>>8383514 (me) Using the title of the NIH paper nets moar results - possible that there are moar recent papers.