How does Healthy Together’s Contact Tracing work with Bluetooth?

Jeff and Sarah don’t know each other, but Healthy Together’s app with Bluetooth services securely records a potential exposure event.
A few days later Jeff feels sick, checks his symptoms and is directed to get tested at a nearby health clinic.
The Public Health Department receives Jeff’s positive COVID-19 test result from the clinic. Through a Healthy Together integration, a public health official notifies both Sarah and Jeff what they should do next.
Jeff quickly and securely receives his test result in the Healthy Together app. This integration with Public Health reduces the time and risk of Jeff spreading the virus.
Sarah receives a call from Public Health informing her that she was exposed to COVID-19 and is instructed to take the appropriate next steps.