It may feel as though we are living in unusual times, with all the strange precautions we have been forced to adopt to try and contain COVID-19, but plagues have afflicted humans for thousands of years.

The novel coronavirus is a threat “both wholly new and deeply ancient,” according to Nicholas Christakis, professor of social and natural science at Yale University, and the author of “Apollo’s Arrow: The Profound and Enduring Impact of Coronavirus on the Way We Live.”

Tapping into his experience as a hospice doctor in the early days of his career and his expertise in social networks, Christakis explains what it will take for citizens, leaders, and societies to work together to get through the current crisis and what we might expect when it is finally over.