close-up image of corovavirus covid-19 cell by microscope in blood. background 3d rendering

2019ncov asia background bacteria bacterium biological biology biotechnology blood cell china close closeup corona coronavirus corovavirus covid19 disease epidemic fever flu focus health illness illustration image infect infection infectious macrophotography magnification medical medicals medicine micro microbe microbiology microscope organism outbreak pandemic pathogen pathology photography prevention red render rendering research sars science selective symptom vaccine virus wuhan