While the world's major killer disease, smallpox, that used to claim millions of lives has been eliminated, the planet has been struck with a more dreaded disease, AIDS or Acquired Immuno Deficiency Syndrome.

The tribal population groups from 7.95 percent of the total population of India. About 67.76 million persons have been enumerated in the country (excluding Jammu & Kashmir) as members of the Scheduled Tribes (1991 census).