As far as existential threats to the human species go, pandemics rank near the top of the list.

What's the probability of an agressive, highly-fatal outbreak occuring soon? Is it high enough to worry about? And if one occurs, what can/should we do to protect ourselves and our loved ones?

To address these questions, we interview John M. Barry, author of the award-winning New York Times best-seller The Great Influenza: The Epic Story of the Deadliest Plague in History.

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