I'd think it was zero, not four! I don't think anybody on here has said we have reached herd immunity.
What I've said, and sincerely believe, is that the levels we will have - which, depending on reports, would be anywhere from 3% to 10%, will take the edge off any second surge, such as is to be expected if lockdown is lifted too quickly, or too completely.
It's a far cry from the 60 or 70% needed for full herd immunity to kick in, but every single person that recovers from Covid-19 is helping build immunity.
We do, IMO, need antibody tests ASAP. If it's shown someone has good levels of antibodies, that's someone who can get back to work as normal without fear of catching the disease. I would be back at the school quite happily if I knew I was immune, for example. It's the uncertainty that's problematic.
Originally Posted by: Retron