I am so worried, my ex's mum has had a saliva test and she is producing an enzyme that is linked to TB. She was with my 5 year old all day on Saturday. We have to wait till mid December to find out the results of more thorough tests. Why is it such a long wait for a possible life threatening infection? I'm losing my mind worrying over this. My daughter gets a cough that sees to last all winter sometimes anyway and I also have a 17 month old. I'm so worried about it being passed on to the children. Has anyone else been in this situation before? So scared :( why don't they vaccinate against it sooner?!