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.

Indian society consists of immensely varied political, social, ethnic, linguistic, religious and community groups, which, by and large, reside in villages, where poverty, misconceived religious notions, social customs, illiteracy, ignorance and superstitions prevail.

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).