The curve may be flattening here in the US, but in many crisis-hit countries around the world, the worst may yet be ahead. A new report by the International Rescue Committee estimates that without immediate action, there could be a billion infections and more than 3 million deaths in 34 crisis-affected countries. These include war zones like Afghanistan, Syria, and Yemen. The World’s host Marco Werman speaks with David Miliband, president and CEO of the IRC.