ASSOCIATED PRESS ATLANTA -- Federal health officials are recommending a new, more accurate blood test for tuberculosis that may someday replace the skin test used for the past 100 years. The Centers for Disease Control and Prevention said Thursday that the test - called the QuantiFERON-TB Gold - is less likely to yield false positive readings and more convenient for patients. "This is one of the first TB advancements made since the discovery of antibiotics. ... This is a huge deal," said Jennifer Grinsdale, an epidemiologist with the San Francisco Department of Public Health. With the skin test, a health...