Ключевые слова: analysis, assistant, biochemistry, biology, blood, chemist, chemistry, clinical, diagnostic, discovery, disease, doctor, education, epidemic, examining, experiment, flu, glasses, global, health, hospital, indoor, laboratory, mask, medicine, microbiology, nurse, occupation, one person, outbreak, pandemic, patient, pharmacy, positive, protection, quarantine, research, risk, sample, science, scientific, scientist, showing, studying, test, treatment, tube, vaccine, vessel, virus,