WASHINGTON — The US is adding an extra $150 million to the global AIDS fight, with a first step toward reaching some stigmatized populations. Despite tough fiscal times, “I am here today to make it absolutely clear the US is committed and will remain committed to achieving an AIDS-free generation," Secretary of State Hillary Rodham Clinton told the International AIDS Conference Monday. That's a big goal: Some 34.2 million people worldwide are living with HIV, the virus that causes AIDS, and 2.5 million were infected last year. But the world's largest AIDS meeting this week is debating how to spread scientific advances in ways to stem spread of the virus to get there. Key is targeting those tools where they can have the greatest effect. “We need to go where the virus is," Clinton told the meeting. That means a focus on populations at especially high risk: gay and bisexual men, sex workers and injecting drug users. In many countries, stigma and laws that make their activities illegal drive those populations away from AIDS programs that could teach them to reduce their risk of infection, Clinton said. “If we're going to beat AIDS, we can't afford to avoid sensitive conversations," she said. Removing stigma is crucial, singer Elton John told the conference. “We have to replace the shame with love," the British artist said. “We have to replace the stigma with compassion. No one should be left behind." Included in the new US funding is $15 million for research to identify the best HIV prevention tools to reach those key populations in different countries, and $20 million to create a challenge fund to support country-led efforts to put those findings into practice. Closer to reality is a goal of virtually eliminating transmission of HIV from infected pregnant women to their babies by 2015, by getting the mothers onto anti-AIDS drugs. HIV-infected births are rare in the United States and are dropping steadily worldwide, although some 330,000 children became infected last year. Clinton said the US has invested more than $1 billion toward that goal in recent years and is providing an extra $80 million to help poor countries finish the job. Much of the AIDS conference is focused on how to get treatment to all people with HIV, because good treatment saves their lives and reduces their chances of infecting others. But drugs aren't the only effective protection. Dr. Anthony Fauci of the National Institutes of Health said male circumcision is “stunningly successful" too at protecting men from becoming infected by a heterosexual partner. Clinton said the US will provide $40 million to help South Africa reach its goal of providing voluntary circumcision to half a million boys and men this year. The world spent $16.8 billion fighting AIDS in poor countries, the hardest-hit, last year, and the US is the leading donor. — AP