René Kahn, MD, PhD, introduces Craig Katz, MD, Director of Mount Sinai’s Global Mental Health Program, who delivers a Grand Rounds lecture on the behavioral sequelae of epidemics. He discusses common human reactions to infectious outbreaks, factors that influence people’s reactions to them, and how to apply these historical lessons in your own practice. He also covers recently published data on the mental health repercussions of health care workers following COVID-19 in China.