There's some very measured and clever people on here so I hope this is ok to ask even though it's not the point of thread ?!
With regards testing in schools.
They will do LFT and if positive you do a PCR?
You then isolate for the 10 days if positive (wither from symptoms starting or from positive as asymptomatic)
The close contracts are then tested daily for 7 days and follow same procedure as above?
Here's the question. We know that PCR tests can be positive for up to 3 months after being infected and sometimes longer?
Does the LFT have the same results? If so I can see this being problematic?
So person A shows symptoms on day 1. Positive LFT and on day 3 has positive PCR.
Persona B C and D are tested daily. B and C get positives and isolate.
Person E is contact of B and eventually they test positive. 16 days (for example have passed by this point)
Turns out that person A has since been a close contact of E. what are the realistic chances they'll get another positive within that 7 days if they have dead virus in their system?
What happens then? Now we know you can catch it twice although it's not thought to be a high percentage of people. Will people have to re isolate?
Is there a realistic chance this could cause small groups of close contacts in schools to be re isolating in a cycle? Does that mean in some cases that whole groups (assuming table plans bubbles etc) could end up isolating for much more time than the test/positive/isolate system?
I assume though that people have isolated multiple times the previous system even if they'd have a previous positive?