contact tracing app covid pandemic coronavirus mobile application people wearing face mask using smart phone |
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| navigate by keyword : coronavirus pandemic application outbreak app sign phone pneumonia mobile tracing contact alert mask covid city street face 2019ncov young smart woman aid using wearing response people business health covid19 red internet spread tourism device virus protective girl egov surgical social distancing prevention digital |
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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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