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africa, b11529, ban, card, case, classification, clipboard, color background, concern, coronavirus, covid, covid variant, covid19, covid19 omicron variant, covid19 variant, drug, epidemiological, epidemiology, evolution, infection, medical background, mutation, new, new covid variant, new variant, nobody, objects, omicron, omicron variant, pasteboard, pill, reinfection, risk, safety, sarscov2, south, south africa, south africa variant, stethoscope, text, top view, travel, variant, virus, who, world health organization,