no one is saying - non immune healthy individuals - in the low risk group won't get infected and won't spread it...That is not the goal.
The goal is to get them back to work... because if they do get infected they are likely to have less serious infections.
you keep the high risk group isolated as best you can because you know chances are many individuals in the low risk group are going to get infected sooner or later.
No one said the goal of shutdown is to prevent infection... that would take a very long time.
The shutdown was pitched to keep hospital beds open. They were never full.
This shutdown is a govt made disaster.
The goal is to get them back to work... because if they do get infected they are likely to have less serious infections.
you keep the high risk group isolated as best you can because you know chances are many individuals in the low risk group are going to get infected sooner or later.
No one said the goal of shutdown is to prevent infection... that would take a very long time.
The shutdown was pitched to keep hospital beds open. They were never full.
This shutdown is a govt made disaster.
Bottom line - if a person is "healthy" (or low risk) it does not reduce their chance of infecting others. Their R factor is the same as an "unhealthy" (high risk person). There is no difference in the R infection factor.
At an individual level, the only change in the R infection factor is if someone is immune due to acquired immunity from previous infection or vaccination.
By definition of how R is calculated in a society there is no difference between low risk and high risk people --- unless you will strictly segregate them into separate communities with no contact between the two. If you strictly segregate "high risk" people into a "housing center" with no apparent disease being introduced then their R infection rate will be low to a novel disease -- while the R infection rate for low risk people wandering freely around town with no lockdown will be high.
The problem is that there is no realistic way to segregate the high risk community from the low risk community when high risk individuals must be cared for, get food, require supplies, etc. -- which makes the high R prevalent across the "low risk" community very quickly introduced into the high risk community -- killing them off.
No experts have said the raw infection rate with no mitigation R0 (or Rnaught) is below one. All the scientific research has it above 2 for COVID-19 and most studies have it between 4.1 and 6.8
The effective reproduction rate R for COVID-19 has been driven below 1 when mitigation measures such as full lockdowns are taken. New York, Germany, and South Korea have driven R below 1.0 -- if it goes back up above 1.2 at an point then the lockdown measures will be re-applied.