The Gates Foundation has quickly become a major influence upon global health; the approximately US$800 million that the foundation gives every year for global health approaches the annual budget of the United Nations World Health Organization (193 nations) and is comparable to the funds given to fight infectious disease by the United States Agency for International Development. The Foundation currently provides 17% (US$86 million in 2006) of the world budget for the attempted eradication of poliomyelitis(polio).
The charitable organization is involved in both improving health, and eradication of disease, mostly in third world countries. Bill Gates has applied himself to philantropy, as he did to programming; unusual, energetic, and overseeing all details. He does not want his organization to fall prey to many philantropy gifts; money not reaching the intended goals, but going line the pockets of politicians, etc.
Here follows a video which shows what his Health organizations does: