I do not usually cover medical pathology in this blog, but I heard a compelling on-line lecture on COVID-19 by Amesh Adalja MD, who is a Senior Scholar at the Johns Hopkins Center for Health Security. His expertise is in emerging infectious diseases, pandemic preparedness, and biosecurity. For those of you interested in his medical career path (as I was), Dr. Adalja completed a combined residency in internal medicine and emergency medicine and then completed two fellowships – one in infectious diseases and one in critical care. The lecture does a great job of putting COVID-19 in historical, evolutionary, and policy context. One point: The lecture is about 2 weeks old, and, of course, much has occurred in that time frame, but understanding other pandemics and their lead up to this one is helpful. It’s worth the time to listen.