Fun with math: If 67% of the population needs to be immune to Covid-19 to reach herd immunity and vaccines are 50%-70% effective against transmission then we need to vaccinate 96%-134% of the population to reach herd immunity. Seems like a lot https://t.co/37igSITkSO

— Justin Fox (@foxjust) February 3, 2021

Jesus Christ, that’s not how any of this works. Where is this crap coming from? That’s not really how herd immunity functions and this is assuming we don’t practice any other mitigation measures (masking, no large gatherings, etc).

I estimate we’ll start seeing an enormous decrease in cases at ~50% vaccine rates and as spring starts getting people outdoors.