Have you read the information I posted?  I am only passing information along...not making it up or playing doctor.  Some of the doctors/researchers won Nobel prizes for their research.  This is valid research and it is currently being used for Covid 19 in some countries.  It is not the only successful prevention/cure.  This information is not well known because nobody owns vitamin C  and they can't patent it and make billions off of us who like to make knowledgable  choices about our healthcare.  I choose to share this to give people every advantage possible in improving their immune systems. Knowledge is power so you can remain powerless and ignorant or learn from people who are much smarter than you or me.  The choice is yours. "Substitute knowledge for fear." Dr.Andrew Saul