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2019ncov, abstract, attention, background, bacteria, biohazard, careful, caution, concept, contagion, contamination, coronavirus, danger, detected, die, disease, epidemic, flu, global, hazard, infection, information, medical, medicine, mers, merscov, novel, outbreak, pandemic, panic, pneumonia, prohibition, protection, quarantine, respiratory, risk, safeti, safety, secure, syndrome, text, usa, vaccine, virus, virus strain, warning,