According to peer reviewed studies zinc and zinc Ionophores like Quercetin inhibit influenza virus and covid-19.
Perhaps no more flu shot?
Here are the studies:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4728566/
https://pubmed.ncbi.nlm.nih.gov/26712783/
https://www.frontiersin.org/articles/10.3389/fimmu.2020.01451/full
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7824064/
https://journals.sagepub.com/doi/full/10.1177/1934578X20976293
https://www.sciencedirect.com/science/article/pii/S0223523420307261