> Good: ~90% of individuals achieve immunity. As far as I recall, the high R0 of COVID-19 meant that >90% was needed for herd immunity. You then also have to f

> Good: ~90% of individuals achieve immunity. As far as I recall, the high R0 of COVID-19 meant that >90% was needed for herd immunity. You then also have to factor anti-vaxxers into the equation. It's a good stop-gap for the 90% who develop immunity, but we need a better vaccine even in developed countries.