Since the identification of AIDS in 1980s, the spread of the disease has been so dramatic that the number of HIV infected patients has reached to about 40 million as per WHO estimate 2006. The global HIV - AIDS epidemic has killed more than 2.9 million people in 2006. In Asia 8.6 million HIV infected cases have been reported in the year 2006-2007, where in India emerged as a country having largest HIV infected population surpassing South Africa. Till date there ...
