Dr. Marc Siegel talks to the Co-founder & Director of the Institute of Human Virology at the University of Maryland School of Medicine and Co-founder for the Global Virus Network, Dr. Robert Gallo, as well as the President of the Global Virus Network, Dr. Christian Brechot, about COVID-19 Origin, Immunity, Vaccines, and Variants. And, Dr. Gallo offers some insight into his role in discovering HIV, as well as pioneering the development of the HIV blood test.