1. Ministry of Public Health Lebanon :
2. Lebanese Pediatric Society:
3. Child of Lebanon:
4. World Health organization:
5. Centers for Disease Control and Prevention:
6. American Academy of Pediatrics:
7. Haut Conseil de Santé Publique:
8. Institut National de Veille Sanitaire:
9. Infovac-France :
10. Infovac-Suisse:
11. Safe Travel: