19
2019ncov
aid
alert
app
application
canceled travel
canceled vacation
city
contact
control
coronavirus
covid
covid19
covid19 quarantine
covid19 virus
crisis
data
design
distancing
egov
face
global pandemic
install
internet
mask
medical
mobile
outbreak
pandemic
phone
pneumonia
protective
quarantine
response
security
sign
smart
social distancing
spread
street
tracing
travel
using
virus
wearing
woman
young
定額
contact tracing app COVID-19 Pandemic Coronavirus Mobile Application - people Wearing Face Mask Using Smart Phone App in City Street to Aid Contact Tracing in Response to the 2019-20 Coronavirus Pandemicの素材 [FY310150218961]
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