Ключевые слова: alert, attention, background, biohazard, biology, care, caution, cloud, collage, concept, coronavirus, covid, danger, dangerous, design, epidemic, flu, hash, hashtag, hazard, health, icon, illness, infection, influenza, inscription, keywords, medical, medicine, microbiology, microorganism, pandemic, pathogen, pneumonia, prevention, quarantine, risk, sickness, symbol, tag, tagcloud, text, typography, virus, warning, word,