Executive summary As of May 31, 2022, there were 6· 9 million reported deaths and 17· 2
million estimated deaths from COVID-19, as reported by the Institute for Health Metrics and …

The COVID-19 pandemic has wreaked havoc globally and still persists even after a year of
its initial outbreak. Several reasons can be considered: people are in close contact with …

Background Digital proximity tracing apps were rolled out early in the COVID-19 pandemic
in many countries to complement conventional contact tracing. Empirical evidence about …

Introduction: Using digital technology to provide support, medical consultations, healthcare
services, and to track the spread of the coronavirus has been identified as an important …

Governments worldwide are using digital contact tracing (DCT) apps as a critical element in
their COVID-19 pandemic lockdown exit strategy. Despite substantial investment in research …

Abstract The coronavirus disease 2019 (COVID-19) is a severe global pandemic that has
claimed millions of lives and continues to overwhelm public health systems in many …

Contact tracing is a non-pharmaceutical intervention (NPI) widely used in the control of the
COVID-19 pandemic. Its effectiveness may depend on a number of factors including the …

While Digital contact tracing (DCT) has been argued to be a valuable complement to manual
tracing in the containment of COVID-19, no empirical evidence of its effectiveness is …

Digital contact tracing provides an expeditious and comprehensive way to collect and
analyze data on people's proximity, location, movement, and health status. However, this …

The timing of SARS-CoV-2 transmission is a critical factor to understand the epidemic
trajectory and the impact of isolation, contact tracing and other non-pharmaceutical …