Ключевые слова: 19, alert, asian, background, banner, biology, blue, contagion, corona, coronavirus, covid, covid19, danger, disease, epidemic, globe, green, health, infect, isolated, lethal, medicine, microbiology, microscopic, pandemic, pneumonia, red, research, respiratory, sars, science, text, text place, vaccine, viral, virology, virus, warning, white, world,