[JChase2]

Even if they had 30% immunity, that still leaves the majority of the population exposed. I'm sure 30% would be very much preferable (if it's even true), but probably not good enough to allow things like concerts or maybe even sit down restaurants to reopen.

[myk9001]

There are estimates that herd-immunity is achievable at 43%

"The disease-induced herd immunity level is 43% ... when immunity is induced by disease spreading, the proportion infected in groups with high contact rates is greater than in groups with low contact rates"

https://arxiv.org/abs/2005.03085