1. Enterovirus and Viral Gastroenteritis Unit, National Centre for Microbiology Instituto de Salud Carlos III Madrid Spain
2. CIBER de Epidemiología y Salud Pública (CIBERESP) Madrid Spain
3. Department of Pediatric Gastroenterology University Hospital La Paz Madrid Spain
4. Pediatric Infectious and Tropical Diseases Department La Paz University Hospital Madrid Spain
5. Translational Research Network in Pediatric Infectious Diseases (RITIP) Madrid Spain
6. CIBERINFEC (CB21/13/00049) Instituto de Salud Carlos III Madrid Spain
7. Immunology Department Hospital Universitario La Paz‐IdiPAZ Madrid Spain
8. Center for Biomedical Network Research on Rare Diseases (CIBERER) Instituto de Salud Carlos III
9. Department of Clinical Microbiology Hospital Universitario La Paz Madrid Spain
10. Department of Pathology Hospital Universitario La Paz Madrid Spain