Ключевые слова: africa, alert, analysis, analyzing, biological, blood, botswana, concept, contagious, cov, data, deltacron, development, diagnosis, doctor, epidemic, epidemiology, health care, hospital, immunity, infected, laboratory, medical, mutant, mutation, new, november, omicron, reinfection, research, risk, south africa, spread, strain, test, transmission, tube, update, vaccine, variant, viral, virology, virulence, virus,