The only vaccine in use today--BCG (Bacillus Calmette and Guerin)--is an attenuated variant of the bovine TB pathogen. This is more than a hundred years old and has a limited effect on pulmonary tuberculosis, which is mostly responsible for the transmission of the disease. Studying the safety, immunogenicity and efficacy of MTBVAC in the most populated country in the world and the one with the highest number of cases of this infectious disease is key to continue advancing in this vaccine," the company said.