Ключевые слова: 19, ailing, ailment, black, blaze, circulate, clinical, cold, combating, complaint, concept, corona, covid, damage, danger, diffuse, disease, expand, fear, generate, germs, guard, harm, hazard, illness, infected, insecurity, jeopardy, mark, negative, new species, patient, prevent, problem, proof, protect, report, results, risk, safe, safeguard, shield, sickness, spread, taint, test, undetectable, virus, white,