Some natural immunity analysis for dizzy:
Seroprevalence estimate from Jan 2021 put it at 20%
This cross-sectional study uses data from a dialysis organization in the US to assess the seroprevalence of SARS-CoV-2 antibodies among patients receiving dialysis and to estimate the seroprevalence among the adult population 1 year into the COVID-19 pandemic.
jamanetwork.com
A new report, based on data from dialysis centers, suggests the US is far from reaching so-called “herd immunity.”
www.contagionlive.com
Disclaimers say that antibodies last 4-6 months, so it misses some of the people who caught the virus early. Also misses anyone who got sick since very early 2021.
correcting for that still puts it at under 50%. Add in vaccines, you’re maybe at 70%. But you need 90 or 95 for Delta.
So, 25% more infections or 25% more vaccinations. Your choice.