AIDS stands for "Acquired Immune Deficiency Syndrome," which is what happens when a person's immune system is destroyed by the HIV virus.
According to the United Nations, more than 37 million people are living with the HIV virus, which causes AIDS. More than two-thirds of them are in sub-Saharan Africa. More than 36 million have died of AIDS related complications.
There are just a handful of medical centers in Africa that use needles and substitute drugs to help addicts. The only center in West Africa is located in Dakar, Senegal. The hope is to reduce the rate of HIV and Aids among drug addicts in the capital - while helping them ditch illegal drugs. Yet it's just a start to address drug addiction in Senegal and across the region.