That funding is expected to allow medical services for 7,500 more patients across the country, and help 3,000 of the 6,500 Americans on drug waiting lists get access to lifesaving medications.

The president also urged other countries to give to a global fund to fight AIDS, singling China out specifically as needing to donate.

Countries that haven’t made a pledge need to do so, he said. That includes China and other major economies that are now able to step up as major donors.

In addition to the new funding, the president announced that he was raising the treatment target from 4 million to 6 million by the end of 2013. The administration said effective treatment of an HIV-positive person reduces the risk of transmission by 96 percent.

The United States will also aim to provide antiretroviral drugs to 1.5 million HIV-positive pregnant women, in hopes of preventing transmission to children.

The rate of new infections may be going down elsewhere, but it’s not going down here in America, Obama said. There are communities in this country being devastated still by this disease. When new infections among young, black, gay men increase by nearly 50 percent in three years, we need to do more to show them that their lives matter.

American aid will provide more than 1 billion condoms over the next two years and fund 4.7 million voluntary male circumcisions — shown to reduce the chance of HIV transmission — in eastern and southern Africa.