Thanks, yes results at 6 this morning, all clear, PHEW!
The two people that were looking after the Mum, one is in her early 20s and is displaying no symptoms at all, the other is late 40s and just feels 'a bit fluey', the man who caught it is 51 and has had nausea, headaches and aching muscles but only for a couple of days and is out of bed already (but still staying in one room in the house until clear).
We're just mystified as to how the man caught it, we thought he may have been tempted to give his Mum one last hug (who wouldn't be tempted!) but he swears he didn't.
So now we're tracking his movements and contacts over the past week or so and asking them all to get tested, someone he was near obviously has it.