You aren’t going to catch the asymptomatic in the first round of testing.
That is why it is imperative that we live with the lock down until new cases approach zero. Because that means there shouldn’t be many asympotaics in the population. Because if you follow the advice of '14 days after cases hit zero (or near zero) in those 14 days, even the asymptotic will clear the virus. Or most should.
So now we are opening up with a population mostly clear of the virus by virtue of the widespread lockdown.
I can’t explain it as well as the dozens of articles written by people who actually study this stuff. Please take a look at those.
The general idea is to come out of lock down as close to a clean population as you can reasonably get.
You know there are no new cases because people aren’t getting symptomatic.
If your population has no one symptomatic, it is reasonable to assume there is no one asymptomatic as well. Because both will pass the virus in a similar time frame.
This is also why the experts really want to wait 14 days after new case zero is hit.
Because, spring allergies have similar symptoms. I have been dealing with allergies since Mid March. Before COVID really took hold here in Indiana. I knew it was allergies…but two weeks later, people all were worried about me. It’s been a month and I have the same symptoms I have had since Mid March, maybe longer. It’s pollen…but I imagine now that there is a lot of guidance out there that people are contagious without fevers. I would imagine just to make sure that there is a negative on record…and that if anyone is positive they are not infecting the work place.
But I would agree on this point. We don’t need workplace heros. If you are sick, stay home…I am one of those guys…when I am sick…I go to work, because I am the boss. Right at the start of this thing, I had a manager who came into a meeting sweating profusely barely able to walk. I sent his ass straight out of there, and sent him to his doctor. Thankfully for him it was “just the flu” he was off for two weeks anyway. He was glad I made him go.