David Spiegelhalter: "What have been the fatal risks of Covid, particularly to children and younger adults?"
From June, but illustrates the difficulties and unfairness of any national policy, which will be driven by the numbers of deaths and by economics.
Teachers concerns naturally include the increased risk for the over-45s,
although this risk remains small even for 60-year-old teachers - provided community infection remains so low
https://medium.com/wintoncentre/what-have-been-the-fatal-risks-of-covid-particularly-to-children-and-younger-adults-a5cbf7060c49
people of different ages have been exposed to dramatically differing risks.
Fatalities among school-children have been remarkably low.
......
Covid death rates have a fairly precise exponential increase with age, increasing at around 12–13% each year,
corresponding to a doubling every 5–6 years.
This means that a 20-year age-gap increased the risk by around 10-fold.
So, compared to a 20-year-old, an 80-year-old had 10 x10 x10 ~ 1000 times the risk of dying.
The Covid population death rates are roughly proportional (ie parallel on a logarithmic scale) to ‘normal’ death rates for over 45s,
but well below normal rates for younger ages.
Note these are in addition to the normal rates.
The lesser relative effect of Covid on younger groups could be partly because their ‘normal’ risk will be more strongly influenced by accidents and non-natural causes,
whereas Covid seems to multiply the risk of ‘natural causes’ - it just seems to take any frailty and multiply it.