Sourced of - Dr John Campbell - https://www.youtube.com/watch?v=EaSU2mfNrIg https://covid19.nj.gov/faqs/coronavirus-information/about-the-virus/how-are-the-coronaviruses-that-cause-the-common-cold-different-from-the-covid-19-virus https://www.cdc.gov/coronavirus/general-information.html https://www.nature.com/articles/s41467-021-27674-x https://www.webmd.com/lung/news/20220111/common-cold-covid-protection https://www.telegraph.co.uk/global-health/science-and-disease/germany-urges-china-end-lockdowns-western-vaccines/?WT.mc_id=e_DM71323&WT.tsrc=email&etype=Edi_GHS_New_Tue_B&utmsource=email https://www.medscape.com/viewarticle/984612?src=wnl_edit_tpal&uac=127834AR&impID=4926650&faf=1