Influenza or the flu is thought of as a common but mild disease and yet it kills up to fifty thousand people in the United States a year. In 1918 one third of the world’s population was infected with influenza: it's estimated that between fifty and one hundred million people died in that pandemic. While we have learned a lot since then, vital questions about the flu continue to confound even the leading experts. Dr. Jeremy Brown is an emergcy room doctor and the author of Influenza: the Hundred