So many very knowledgeable people investing so much time on this forum's thread is , indeed, applaudable. However, I feel that many of their words are "all Greek" to me (and probably most Americans). Although it does bring back memories of biology, and physiology classes, I'm guessing that most Americans are hungry for someone...Anyone.... that can boil all this down to a level that a high school student can comprehend. My 9th grade biology teacher could have taught me more about, viruses, immunization and pandemics in one hour,,,,, than Fauci has done in two years.