Ключевые слова: attention, background, bacteria, biohazard, biology, caution, chinese, concept, contamination, country, covid19, danger, diagnosis, disease, epidemic, fever, flag, flu, global, health, hospital, idaho, illness, infected, infection, mask, mers, novel, outbreak, pandemic, pneumonia, prevention, quarantine, respiratory, risk, sars, science, state, syndrome, test, usa, vaccine, virology, virus, warning,