1. Department of VirologyNational Influenza CenterRespiratory Viruses UnitInstitut Pasteur of AlgeriaAlgiersAlgeria
2. Faculty of Sciences, Department of BiologyEcoSTAq Research LaboratoryUniversity Badji MokhtarAnnabaAlgeria
3. National Institute of Public Health of AlgeriaAlgiersAlgeria
4. Dipartimento di Scienze Mediche VeterinarieUniversità di BolognaOzzano dell'Emilia, BolognaItaly