I came across the following in a paper from 2003.
"ELISPOT, an enzyme-linked immunospot that detects T cells specific for Mycobacterium tuberculosis antigens, promises to be a major advance in screening for tuberculosis (TB), according to the results of a study published in the April 5 issue of The Lancet. In a comparison trial, ELISPOT was more accurate than the tuberculin skin test and was unaffected by BCG vaccination."
Personally, I would have said "The ELISPOT assay" rather than just "ELISPOT," but that's just me. At any rate, I like the idea of using this technology for TB screening.