Could you post a working version of that link? Most R0 estimates I have seen are between 2.5 and 3.5. 5.6 seems really high to me. It is worth considering that

Could you post a working version of that link? Most R0 estimates I have seen are between 2.5 and 3.5. 5.6 seems really high to me. It is worth considering that even if the % immune is lower than the herd immunity level, it still slows the outbreak and reduces Re. That gives us a much slower ramp up and gives other measures like less restrictive social distancing, contact tracing, etc. a chance to work. Even if all those together only get Re down to between 1 and 2, we still benefit since it means we might only need another 1 or 2 lockdown periods before we get an effective vaccine.