Viable Influenza Virus in Cough and Exhaled Breath Aerosol Particles. WILLIAM LINDSLEY, Francoise Blachere, Donald Beezhold, Robert Thewlis, Bahar Noorbakhsh, Sreekumar Othumpangat, William Goldsmith, Cynthia McMillen, Carmen Burrell, John Noti, National Institute for Occupational Safety and Health