Majority are already resistant to Sars co2

https://articles.mercola.com/sites/articles/archive/2020/06/30/can-your-immune-system-fight-off-coronavirus.aspx?cid_source=dnl&cid_medium=email&cid_content=art1HL&cid=20200630Z1&et_cid=DM580183&et_rid=905567090