Yeah New York's seroprevalence study gave us some of the most interesting news of this entire pandemic. I'll repost what I posted yesterday about it:
Including probable deaths, this yields an IFR of about 0.7% (between 0.5%-1%, as some things can drive it up, like many people infected have yet to die, and some can drive it down, like not all probable home covid deaths are covid deaths).
This is perfectly harmonious with most research out there. Many studies have shown 0.7% as the true IFR. https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(20)30243-7/fulltext
**So this is terrible news for the herd immunity crowd.**
Why? If the IFR is 0.7%, let's just say 20% of the country gets infected. 65,600,000 people.
That would mean that 459k people would die. That's just at 20%. Herd immunity requires 85%.