RE:RE:RE:Theoretical source of the Omicron variantI have enjoyed Dr Campbell's presentations for some time, especially his Broccoli soup recipe. :-)
I do take vitamen D and believe in its efficacy.
Below is an extremely long Wiki presentation which covers most aspects of Covid misinformation most folks will probably find it too long and boring to completely consume, besides it does tend to jar the beliefs of some people.
https://en.wikipedia.org/wiki/COVID-19_misinformation#Vitamin_D