Prior to the release of a safe and effective vaccine, serology testing to detect antibodies and a PCR test to determine if an infected individual still harbors active virus and is still a danger to others, isolation is still the only real safeguard. However if a given individual has antibodies and a negative PCR test, then that individual is immune, infection free and can freely go about their business. Hopefully these tests will be available soon to all.
Bingo. I can't understand why people seem incapable of realizing this. Perhaps, once the "self-swab" tests ramp up, mass testing should be part of the strategy to "open up the country" once again.