Infectious diseases in children: refers to the following ten infectious diseases among the national legal infectious diseases: 1. Polio; 2. measles; 3. Japanese encephalitis; 4. whooping cough; 5. Diphtheria; 6. Neonatal tetanus; 7. Scarlet fever; 8. Mumps; 9. rubella; 10. Hand, foot and mouth disease.