Genomic sequences of exported mycobacteria polypeptides, vectors containing them and applications to the diagnosis and prevention of tuberculosis

screening recombinant vector, cloning and / or expression, characterized in that it replicates in mycobacteria and in that it contains a 1) a functional replicon in mycobacteria; 2) a selectable marker; 3) a cassette indicator comprising: a) a multiple cloning site (polylinker), b) optionally a terminator active transcription in mycobacteria, in upstream direction of the polylinker, c) a first nucleotide sequence encoding a marker export and / or secretion of protein, said nucleotide sequence lacking its initiation codon and its regulatory sequences, and d) in downstream direction, a second nucleotide sequence encoding a marker promoter activity contained in being cloned fragment, said nucleotide sequence lacking its initiation codon being.