Despite boost from U.S., Global Fund faces a struggle.
Wealthier nations are not giving their fair share, critics charge.
D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control; D005381:Financing, Organized; D006801:Humans; D007391:International Cooperation; D008288:Malaria / Q000517:prevention & control; D011314:Preventive Health Services / Q000191:economics*; D014376:Tuberculosis / Q000517:prevention & control; D014481:United States