Detection of Mycobacterium tuberculosis complex by PCR in fresh cheese from local markets in Hidalgo, Mexico.

The objective of this study was to identify the presence of Mycobacterium tuberculosis complex bacterial DNA in samples extracted from fresh cheeses; 95 samples of fresh cheese were obtained from municipal markets in the state of Hidalgo, in central Mexico, and were analyzed in triplicate. The exogenous control for the amplification was the mitochondrial gene for cytochrome b (cyt-b). M.