1. Virpath, EA 4610, Faculty of Medicine R.T.H. Laennec, UCBL, Université de Lyon, Lyon, France
2. National Influenza Centre (Southern France), Hospices Civils de Lyon, Groupement Hospitalier Est, Bron, France
3. Institut Pasteur, National Influenza Centre (Northern France), Paris, France
4. Université Paris Diderot, Sorbonne Paris Cité, Unit of Molecular Genetics of RNA Viruses, Paris, France
5. French National Centre for Scientific Research CNRS URA3015, Paris, France
6. Institut Pasteur, Unit of Molecular Genetics of RNA Viruses, Department of Virology, Paris France