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2019ncov, bacteria, bacterial infection, biohazard, bird flu, concept, contagious, corona, coronavirus, covid19, dangerous, diagnosis, disease, epidemic, fever, flu, health, illness, infect, infection, influenza, medical, medicine, mers, microbiology, new strain, outbreak, pandemic, pathogen, pathogenic, pathology, pneumonia, prevention, quarantine, respiratory, sars, science, sick, sickness, symptoms, syndrome, treatment, vaccine, viral, virology, virus, warning,