Ключевые слова: arm, boy, care, child, clinic, cure, disease, doctor, dose, drug, fear, flu, hand, health, help, hospital, ill, illness, immunity, immunization, infection, influenza, injecting, injection, kid, little, medical, medication, medicine, needle, nurse, pain, patient, pediatrician, people, practitioner, prevention, protection, sick, sickness, small, syringe, therapy, treatment, vaccinating, vaccination, vaccine, virus,