The normal flu vaccine doesn’t cause this kind of a reaction...
What? It absolutely does.
https://www.aspencorporatehealth.com.au/our-services/vaccinations/influenza-vaccinations-frequently-asked-questions/
https://www.everydayhealth.com/cold-flu/cold-flu-questions-vaccines.aspx
https://www.webmd.com/drugs/2/drug-166521/flu-vaccine-quadrivalent-2014-2015-6-mos-up-intramuscular/details/list-sideeffects