Ключевые слова: allergen, animal, bacteria, bacterium, bad, biology, black, bug, cell, contaminant, danger, design, disease, duster, epidemiology, fever, glass, headache, hiv, hospital, human, hygiene, icon, ill, immune, infection, isolated, medical, medicine, microbe, microscopic, mirco, mold, on, organism, pandemic, pathogen, people, pollen, science, shape, sick, sign, spread, superbug, symbol, virus,