But track and trace is retrospective. It doesn't make you less likely to catch it off people? It might give you a heads up if you might have been infected. Don't forget all their parents are still going to work and shopping etc so it's not like it's a bubble that has no external contacts...
The thing is, supermarkets SHOULD be enforcing much better protection for their workers. I appreciate this is no doubt not happening. Till workers behind screens, shelf stackers being able to social distance etc, supermarkets are big old buildings.
For secondary school teachers it's 150+ people...
I remember a big discussion on this at the time, but my basic points would be:
1. March-December. Teachers were only teaching full classes for about 30% of that time due to lockdown and summer hols.
2. It's covering deaths, not infections. Most teachers are under 60. Most teachers are not...
I think the unions are in a difficult place. A government that could well turn out to be the least union-friendly in history, some very unfriendly sections of the media, scientific data being GROSSLY misused to claim that teachers aren't at additional risk and a general public that are...