Ключевые слова: baltic, bus, care, city, corona, coronavirus, covid19, danger, disease, epidemic, europe, european, face mask, health, illness, infection, infectious, latvia, mask, medical, outbreak, pandemic, passenger, people, person, pollution, prevent, prevention, protection, protective, public, quarantine, riga, road, safety, sick, sitting, street, traffic, train, tram, tramway, transport, transportation, travel, trolley, urban, vehicle, virus,