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 business city contact coronavirus covid covid19 device digital distancing egov face girl health internet mask mobile outbreak pandemic people phone pneumonia prevention protective red response sign smart social spread street surgical tourism tracing 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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