It doesn't matter how many ways you try to look at it, shooting for herd immunity without a vaccine is a desperate high-risk decision you only make if you don't have better options. We do. We have several better options. And we are most definitely far away.
I know it won't make a difference, but here is yet another person who knows what they are talking about -
https://www.mdanderson.org/cancerwi...l-we-achieve-herd-immunity.h00-159383523.html
"What does it take to achieve herd immunity?
That varies by disease. For this particular coronavirus, doctors estimate that about 60% to 70% of the human population would need to have antibodies in order to have herd immunity as a species.
What is that COVID-19 estimate based on?
There’s actually a formula used to calculate that percentage (herd immunity threshold = 1-1/R0). This formula includes the basic reproduction number or “R-zero,” which indicates the average number of new people that a single infected individual can expose and infect. That figure for the flu is around 1.3, meaning that each infected person infects an average of 1.3 more people. Unfortunately, for the coronavirus, it’s between 2 and 3. So, this is a very contagious disease.
When will we achieve herd immunity against this coronavirus?
When we have a vaccine for COVID-19. Because we can’t just rely on natural immunity, or the kind that develops after you’ve been infected and recovered.
Right now, one study from Spain estimates that only about 3% of that country’s population has been infected. That figure is probably the same here in the United States. So, we’re still in the single digits, and it’s already putting a significant strain on medical systems worldwide. We probably need around 70% of the population to have developed antibodies in order to halt community transmission of COVID-19.
What happens when we do reach herd immunity for COVID-19?
That depends. There have been some indications that this may be like the flu, and that immunity may not last longer than four or five months. So, immunity may wane over time, and people would need to be revaccinated. But nobody really knows yet.
The bottom line is just because you’re immune today doesn’t mean you’ll still be immune 3 or 6 months from now."