1. These authors contributed equally
2. Laboratory of Reference and Research in Respiratory Viruses, National Centre for Microbiology, Instituto de Salud Carlos III, Majadahonda, Spain
3. Bioinformatics Unit, Unidades Centrales Científico Técnicas, Instituto de Salud Carlos III, Majadahonda, Spain
4. CIBER de Enfermedades Infecciosas (CIBERINFEC), ISCIII, Madrid, Spain
5. Paediatric Infectious and Tropical Diseases Department, Hospital Universitario La Paz, Hospital La Paz Institute for Health Research (IdiPAZ Foundation), Madrid, Spain
6. Paediatric Department, Severo Ochoa University Hospital, Leganés, Biomedical Sciences Research Institute, Puerta de Hierro-Majadahonda University Hospital, Madrid, Spain
7. Santa María Nai Hospital, Ourense, Spain
8. CIBER de Epidemiología y Salud Pública (CIBERESP), ISCIII, Madrid, Spain