1. Virology Laboratory; National Institute of Hygiene; Ministry of Health; Rabat Morocco
2. Faculty of Sciences; Mohamed V University; Rabat Morocco
3. Epidemiological and Diseases Control Department; Ministry of Health; Rabat Morocco
4. Viral Gastroenteritis Division; Centers for Diseases Control and Prevention; Atlanta Georgia
5. UPR Immunology-School of Medicine and Pharmacy; Mohamed V University; Rabat Morocco