Strong interferon-inducing capacity of a highly virulent variant of influenza A virus strain PR8 with deletions in the NS1 gene

¹ Department of Virology, University of Freiburg, D-79008 Freiburg, Germany
² School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
³ Molecular Immunology, Helmholtz Centre for Infection Research, Braunschweig, Germany
⁴ Departments of Microbiology and Medicine (Division of Infectious Diseases) and Global Health and Emerging Pathogens Institute, Mount Sinai School of Medicine, New York, NY 10029, USA