1、 https:/crsreports.congress.gov May 29, 2020Digital Contact Tracing Technology: Overview and Considerations for ImplementationBackground “Contact tracing” is a public health measure used to control disease spread. Trained public health workers assist patients with an infectious disease recall their
2、close contacts within a given timeframe, notify them of potential exposure, and provide advice to patients and contacts. Given the scale of the COVID-19 pandemic, some public health authorities are automating part of the tracing process with smartphone applications (apps). Some apps take advantage o
3、f Bluetooth signals to track individuals proximity to one another, otherwise known as “digital exposure notification (DEN)” Bluetooth allows short-range wireless communications between electronic devices. Apps may also be used by public health authorities to enable “digital contact tracing” (DCT), w
4、hich may also use location data. Development of DCT and DEN Apps in the United States In response to the COVID-19 pandemic, several countries have developed nationwide apps to support contact tracing among their citizens. Singapore developed and adopted both the BlueTrace protocol and TraceTogether
