Ключевые слова: adult, asian, background, biology, blue, care, cell, concept, contagious, corona, coronavirus, covid19, danger, disease, doctor, epidemic, equipment, face, flu, glove, health, holding, hospital, human, illness, infection, male, man, mask, medical, medicine, microbiology, model, molecule, outbreak, pandemic, person, pharmacy, protection, protective, safety, sample, scientist, syringe, test, tube, vaccine, virus,