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2019ncov, background, bacterial infection, bacterium, biology, cell, china, chinese, concept, contagious, corona, corona viruses, coronavirus, danger, diagnosis, disease, epidemic, fever, flu, flu strain, health, human, human influenza, illness, immunity, infect, infection, influenza, lethal, medical, medicine, microbe, microbiology, new strain, pandemic, pathogen, pathogenic, pathology, pneumonia, prevention, risk, sars, science, sickness, superbug, symptoms, vaccine, virology, virus, wuhan,