Ключевые слова: 3d, antibiotics, asian flu, background, bacterial infection, bacterium, biology, bird flu, closeup, color, concept, coronavirinae, coronavirususes, epidemic, fever, flu strain, health, health risk, illness, immunity, infect, killer, medical, microbiology, natural, new strain, pandemic, pathogen, pathogenic, public health, red, retrovirus, sars, science, sickness, skull face, superbug, symptoms, vaccine, virology, virus, white,