Ключевые слова: blood, clinic, concept, container, diagnosis, disease, doctor, equipment, female, flu, hand, health, healthcare, hold, hospital, human, immunity, infection, laboratory, mask, medical, medicine, microbe, microbial, microbiology, patient, people, pneumonia, positive, quarantine, research, sample, scientist, sick, symptom, test, treatment, tube, vaccine, virology, virus, work,