Ключевые слова: adult, background, bacteria, banner, blocking, boost, care, caucasian, children, concept, contagious, coronavirus, covid, covid19, dangerous, defense, design, disease, epidemic, face, family, flu, health, healthy, illness, illustration, immune, immunity, infection, kids, man, mechanism, medical, medicine, mother, parents, people, prevent, prevention, protected, protection, resistant, safety, seasonal, spread, stop, strong, system, virus, viruses,