Brittney Forgus, 14, held a square piece of white gauze over the pinhole in her arm.After the bleeding stopped, all that remained was redness, a bit of weakened tuberculosis bacteria and 48 hours of waiting to see if she, like someone else at Jennings middle school in North Akron, has contracted the deadly but treatable respiratory disease.“It’s a relief that there’s something out there to treat it,” said Barb Forgus, the girl’s mother.