Researchers at the School of Medicine have developed a highly sensitive blood test that can find traces of the bacteria that causes tuberculosis (TB) in infants a year before they develop the deadly disease. Using only a small blood sample, the test detects a protein secreted by Mycobacterium tuberculosis, which causes TB infection. The test can screen for all forms of TB and rapidly evaluate a patient’s response to treatment, said lead study author Tony Hu, Weatherhead Presidential Chair in Biotechnology Innovation.