Someone tested positive yesterday and 3 others were tested who were also positive and sent home.

So now I don't know if we should avoid the grandparents for 7-10 days to see if they have symptoms or is it a case of if it would be to late anyway as I get confused as those people with it are positive but it could of taken 7 days for those symptoms to show

I only just found out while we're visiting them now!

They have tested two departments he wasn't tested i can only assume where he wasn't in that department.