I think we are unlikely to hit herd immunity levels of infection in the US in the next 2 years. I want to see Robin and Zvi discuss whether they think that also or not, since this bears on the value of Robin’s proposal (and lots of other things).
I think there are plausible scenarios where we reach, likely not full herd immunity of ‘everyone can stop washing hands now, we’re fine’ but certainly levels that substantially impact R0 and can combine with ‘ordinary-life-compatible’ levels of avoidance (e.g. hand washing and face not touching, mask wearing, increased working from home and delivery, sports without crowds, less air travel, etc) to combine for effective herd immunity. The hope is that it will also include test+trace and thus be well below what it would take otherwise. I believe super spreaders are a big part of the correct model, and that we’re probably already at 1%+ infection rates for the USA and 10%+ (likely 20%+) for NYC, and that the first 20% infected is going to knock infection rates down 50%+ due to selection effects (which won’t be enough on its own in NYC or other big cities, but is a huge boost even there).
Usual warnings that I know nothing, but that’s my best guess.
Robin I think puts substantial probability that we end up 50%+ infected. I have less, but still substantial. I do think it’s a scenario worth having a mitigation plan for.
I think we are unlikely to hit herd immunity levels of infection in the US in the next 2 years. I want to see Robin and Zvi discuss whether they think that also or not, since this bears on the value of Robin’s proposal (and lots of other things).
I think there are plausible scenarios where we reach, likely not full herd immunity of ‘everyone can stop washing hands now, we’re fine’ but certainly levels that substantially impact R0 and can combine with ‘ordinary-life-compatible’ levels of avoidance (e.g. hand washing and face not touching, mask wearing, increased working from home and delivery, sports without crowds, less air travel, etc) to combine for effective herd immunity. The hope is that it will also include test+trace and thus be well below what it would take otherwise. I believe super spreaders are a big part of the correct model, and that we’re probably already at 1%+ infection rates for the USA and 10%+ (likely 20%+) for NYC, and that the first 20% infected is going to knock infection rates down 50%+ due to selection effects (which won’t be enough on its own in NYC or other big cities, but is a huge boost even there).
Usual warnings that I know nothing, but that’s my best guess.
Robin I think puts substantial probability that we end up 50%+ infected. I have less, but still substantial. I do think it’s a scenario worth having a mitigation plan for.
Yes; thanks; I now agree that this is plausible, which I did not at the time of making my above comment.