Ключевые слова: aid, art, background, bacteria, biology, box, care, case, cell, concept, contour, coronavirus, covid19, cross, danger, disease, emergency, epidemic, flu, health, help, hospital, human, icon, illness, illustration, infection, influenza, isolated, kit, line, linear, lineart, medical, medicine, microbe, microbiology, ncov, organism, outline, pandemic, rotavirus, science, spread, symbol,