Ключевые слова: attention, bacteria, boy, caution, child, chinese, concept, contagious, coronavirus, covid19, danger, disease, earth, ecology, epidemic, global, globe, hand, health care, humans, illness, infect, infection, infectious, lifestyle, love, mask, medical, medicine, nature, pandemic, pathogen, pathogenic, people, planet, prevention, protection, public, quarantine, risk, safety, sars, security, sick, sickness, social, vaccine, virology, virus, world,