Ключевые слова: agrdt, analyzing, antigen, check, coronavirus, covid, covid19, detection, diagnosis, diagnostic, disease, fever, health, immunity, kit, medical test, nasal, negative, nose, omicron, pandemic, pi, prevention, quarantine, rapid, rapid diagnostic test, rdt, respiratory, result, rhi, saliva test, sarscov2, self, sigma, tau, test, testing, tube, virus, ypsilon,