Ключевые слова: alexanderplatz, antigen, berlin, centre, citizen test, corona, corona virus, coronavirus, covid, covid19, diagnosis, diagnostic, disease, doctors, emergency, epidemic, fernsehturm, health, health care, illness, infection, medical, medicine, nose swap, omicron, outbreak, outdoor, pandemic, pcr, prevention, protection, protective clothing, public, quarantine, rapid, safety, schnelltest, screening, sign, station, street, television tower, test, testcenter, testing center, testing centre, virus, winter,