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Ключевые слова:
2019ncov, africa, classification, corona, coronavirus, covid, covid19, covid19 variant, delta, doctor, epidemic, evolution, hand, health, infection, laboratory, medical, medicine, mutation, new, new covid variant, omicron, omicron variant, pandemic, positive, reinfection, risk, sarscov2, test, travel, vaccination, vaccine, variant, vial, virus, who, woman,