Ok, so let me see if I can relay my thinking.. my friends daughter currently has mono, she is very sick and young.. I was researching a little as I dont deal with mono often.. but upon reading something stood out to me from this article.. Was the mono virus used as part of the corona virus for the vaccines? It says that mono causes myocarditis.. also causes Epstein-Barr (which there has been a rise of). Also found out that Epstein-Barr virus causes cancer (also been a rise of) .. Just connecting dots..
https://www.healthychildren.org/English/health-issues/conditions/infections/Pages/Mononucleosis.aspx