Today we are excited to present a Pulmonary Grand Rounds presentation from Daniel S. Chertow, M.D., M.P.H. Dr. Chertow is an Assistant Clinical Investigator in the Critical Care Medicine Department of the NIH and a Special Volunteer in the Viral Pathogenesis and Evolution Section, Laboratory of Infectious Diseases, NIAID. Over the last several years he has solidified his role as a world expert in the field of virology and today speaks on a topic he has published a great deal about, Influenza virus. Tis the season for influenza, and if you ever hope to survive it, you will listen to this talk!