We all are worried both about the devastation of the CV19 and the effect of economic shutdown. When we get a rapid and reliable antibody test (and confirm that this gives at least good temporary immunity), then it will be "safe" to allow at least those people back to work under "normal" circumstances.
What we don't know now is the number of asymptomatic or low symptom individuals who have immunity (show the antibody for CV19).. There are some pretty good studies suggesting that the virus has circulated for longer than initially realized in asymptomatic or low symptom carriers. My guess that immunity is far greater than 2%. These tests are available, and there should shortly be mass testing.
From John Hopkins web site:
Rapid diagnostic test (RDT) 10-30 minutes
Pro: The presence or absence (qualitative) of antibodies against the virus present in patient serum.
Cond:The quantifiable amount of antibodies in the patient serum, or if these antibodies are able to protect against future infection
Enzyme linked immunosorbent assay (ELISA) 1-5 hours
Pro: The presence or absence (quantitative) of antibodies against the virus present in patient serum.
Con: If the antibodies are able to protect against future infection.
Neutralization assay 3-5 days
Pro: The presence of active antibodies in patient serum that are able to inhibit virus growth ex vivo, in a cell culture system. Indicates if the patient is protected against future infection.
Con: It may miss antibodies to viral proteins that are not involved in replication.
There are new tests being developed. Currently there is only one (RTD) which is approved for US. It is already shipping to research institutes. There are over half a dozen approved for research and clinical trials in other countries, and under consideration here--some are available now elsewhere.
There are several dozen more in the "pipeline"--and will be approved at some point in the future.
Many of the tests were developed in China. They have had a huge lead time over the US. Many of our research instituted were working on the problem in mid to late January. China began work in early to mid Dec (Or before???)
So it still remains a time line game....but decisions will need to be made soon for at least partial return to work. Here in Pensacola, we have auto repair shops open, We just had a new fence put in. Houses locally are being built or re-modeled. We also see many who are not wearing masks or gloves and crowding in some stores--other stores there is order and all have masks on. It depends on the state and local governments.
My son was at his boat in Dana Point, CA yesterday to check it out after heavy rains. The launch ramp was still open; he talked to the marina office and they were considering shutting the ramp down because there were social distance and number of people on the boat violations..