Doctor Tiger. A team of American scientists has discovered a molecule that could block transmission of HIV, the virus that causes AIDS.  Researchers say the preventive agent might someday be used in a topical cream to help prevent infection with the

PRASADA RAO Doctor Tiger A top United Nations official says much of the Asia-Pacific region is nearing full treatment coverage for patients with HIV. But Prasada Rao warns access to remote regions in China and India, and disrupted AIDS programs in Pakistan