Ключевые слова: analysis, analyzing, background, bacterial, biochemical, biochemistry, blood, care, chemistry, clinic, closeup, contagious, coronavirus, cov, covid19, diagnostic, disease, doctor, epidemic, equipment, experiment, flu, health, hospital, illness, infected, infection, lab, laboratory, medical, medicine, microbiology, pandemic, patient, research, respiratory, sample, science, scientist, specialist, specimen, technician, technology, test, testtube, tube, vaccination, virus, white,