Back to when? This was first published October 2020. And it was based on pre-Delta/Omicron wave numbers so the amount of time this was valid was pretty low. Bu

Back to when? This was first published October 2020. And it was based on pre-Delta/Omicron wave numbers so the amount of time this was valid was pretty low. But that's also a huge number. That's 1 in 400 people.