I told the school...

[WouldShouldCould]

... Reason for absence is high temp, sweating , sore throat and dry cough. All true although I'm fairly confident it's a bug and not covid-19. But they haven't contacted me to at least find out if we have been abroad, in fact they haven't contacted me at all. I find this concerning, do you?

I’m not sure what you expect the school to do.
If you phoned in an absence citing symptoms of Chickenpox, would you expect to be given advice on how to handle it?