Doctor, Did You Wash Your Hands?® Curated Contemporaneous Case Study Methodology CORONAVIRUS TRACKING – Jonathan M. Metsch, Dr.P.H. PARTS 1-13 (and prequels). March 14, 2020 PART 1. January 21, 2020. “The Centers for Disease Control and Prevention on Tuesday confirmed the first U.S. case of a deadly new coronavirus that has killed six people in … Continue reading CORONAVIRUS TRACKING – Jonathan M. Metsch, Dr.P.H. PARTS 1-13 (and prequels). March 14, 2020