Ключевые слова: 3, antibody, booster, booster shot, care, change, concept, conceptual, cure, disease, dose, drug, epidemic, flu, health, health care, healthcare, hospital, illness, immunity, immunization, infection, injection, medical, medication, medicine, needle, pandemic, prevention, protection, shot, shots, symbol, syringe, therapy, third, treatment, vaccinate, vaccination, vaccine, variant, vial, virus, word,