I agree, first and foremost you need to treat anything that little one came in contact with , like a flea spray or something, do you have pets? if so, I would give them a quick flea bath just to make sure. and then I would seriously consider letting them go, If you have had issues in the past with the wellness of the child and the spread of illness or other conditions, that is grounds alone for termination. sounds like they might be a pile of trouble if you try and keep going. Good Luck!