AP Illustration/Peter Hamlin

What is contact tracing, and how does it work with COVID-19?

The goal of contact tracing is to alert people who may have been exposed to someone with the , and prevent them from spreading it to others. Health experts say is key to containing the virus and allowing places to reopen more safely.

But the process isn’t easy.

After a person tests positive for the virus, a contact tracer would get in touch with the person and attempt to determine where they have been and who they were around.

The focus is on