contact tracing app covid pandemic coronavirus mobile application people wearing face mask using smart phone |
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| navigate by keyword : 2019ncov aid alert app application city contact control corona coronavirus covid covid19 crisis data design distancing egov face install internet mask medical mobile outbreak pandemic phone pneumonia protective quarantine response security sign smart spread street tracing travel using virus wearing woman young |
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| 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. |
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