NEW DELHI: The search for a TB vaccine has proved elusive despite decades of research. However, there is one vaccine that has been found to cut TB disease incidence in India by half - food.Chronic lack of adequate food is the reason for more than half of the TB infections here progressing to become a full blown disease.

India's intellectual property (IP) law has been hailed as one of the most progressive for safeguarding public interest, and several nations like Argentina, the Philippines and Brazil are looking to learn from it. Senior advocate and former UN special rapporteur on the right to health Anand Grover talks to Rema Nagarajan about the pressure the country is facing, primarily from the US, to change its IP laws.