Ключевые слова: city, cityscape, contagion, contagious, coronavirus, covid 19, covid19, crosswalk, crowd, crowded, distance, epidemic, flu, flu season, group, illness, infection, infectious, influenza, intersection, japan, night, outbreak, pandemic, pathogen, pedestrians, people, quarantine, r, r nought, r0, rnought, scramble, shibuya, sick, social distancing, spread, street, tokyo, viral, virus,