P-Values

Discover perspectives on the latest findings, biggest challenges and most exciting successes in our collective work.

At P-Values, you’ll find updates, perspective, insights and information from staff and partners working on the frontlines of research, advocacy and implementation. P-value is a statistical term for the probability that a trial result is reliable and not the outcome of chance. 

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New LEN Resources, Publications on PLP and TG Inclusion and More!

This roundup from AVAC highlights key developments across the field of HIV prevention from accelerating access to lenacapavir, to advancing inclusion of pregnant and lactating people, and trans and gender-diverse communities in research.

October 2025


Inclusion Made Simple, In Difficult Times 

This is not the time to scrub tran and gender diverse people inclusion from HIV trial designs and protocols. Now is the moment to use everything at our disposal to set in motion an era of HIV research that meaningfully responds to this community’s needs.

October 2025


Global Health Watch: US government shuts down, foreign aid funding expires, Jeanne Marrazzo fired from NIH, issue 36

The US government shutdown that began at midnight on October 1 has stalled key public health operations just as the Supreme Court issued a ruling in AVAC v. Department of State that allowed $4 billion dollars in foreign aid to expire, eroding both health and human services and constitutional checks and balances. Meanwhile, Jeanne Marrazzo was officially fired as Director of NIAID, underscoring how politically motivated attacks on science are dismantling the infrastructure that has underpinned decades of progress in HIV prevention and research.

Prevention Option:

October 2025


US Supreme Court Gives the Administration a Free Pass to Withhold Foreign Aid 

Late today in AVAC v Department of State and Global Health Council v Trump, the Supreme Court of the United States granted the US Presidential Administration’s request to stay an injunction that would require the Administration to obligate $4 billion of foreign assistance funds before they expire on September 30, as required by law. The Court’s ruling temporarily grants the Administration’s request to pause a lower court order that the government spend the funds. With just four days until September 30, those funds, which otherwise would have saved lives and advanced global health and national security, will remain unspent. 

Prevention Option:

September 2025


Global Health Watch: A generic price for LEN, Future of UNAIDS, UNGA 80, AI for Health, Issue 35

The stakes are high as the US approaches the start of a new fiscal year (FY26) on October 1, currently mired in stalled White House negotiations and a looming government shutdown; the Supreme Court’s pending decision on AVAC’s lawsuit; and the new US “America First” strategy to reshape foreign aid. This issue highlights major global health developments at the UN General Assembly, from debate over the future of UNAIDS to commitments from the Gates Foundation and Unitaid to accelerate access to injectable lenacapavir for PrEP (LEN), alongside new discussions on AI ethics and health.

Prevention Option:

September 2025


AVAC Applauds Agreements to Accelerate Market Development for Lenacapavir for PrEP

AVAC welcomes parallel announcements from the Gates Foundation and Unitaid on strategic investments to accelerate the development of, access to and price reduction for generic versions of injectable lenacapavir (LEN), the highly effective six-monthly injection for HIV PrEP.

Prevention Option:

September 2025


Global Health Watch: PEPFAR, US foreign aid strategy, CDC turmoil, LEN for PrEP, vaccine policy

Recent Supreme Court rulings could dramatically expand executive power over spending historically controlled by Congress. Coupled with CDC and vaccine policy turmoil, changes to PEPFAR’s planning process, and the State Department’s new “America First” global health strategy, these developments represent high stakes for HIV programs and the future of foreign aid for global health.

September 2025


Global Health Watch: SCOTUS decision keeps foreign aid frozen, US FY26 budget updates, Global Fund’s new report and shifting focus

This week Global Health Watch covers major developments from a Supreme Court decision stalling foreign aid disbursements (again), to the US House’s fiscal year (FY26) budget drafts, and the Global Fund’s updated report and shifting focus....

September 2025


Join Us for ‘24 Hours to Save AIDS Research’

Join AVAC and partners as we host 24 Hours to Save AIDS Research on September 16-17. This all-day, online marathon will include more than 70 speakers from around the world sharing their work and experiences with HIV research.

September 2025


Global Health Watch: PEPFAR Reemerges, Budget Deadlines, Gov’t Shutdown Risks, Vaccine Policy Unraveling and What’s Next for FY26

Congress faces a looming deadline to avert a government shutdown if they cannot agree to a bipartisan fiscal year 2026 federal budget. In this context, the FY26 appropriations process, the President’s request for “pocket rescissions” to claw back Congressionally appropriated funds, AVAC’s court case, and PEPFAR’s reemergence to rollout long-acting PrEP take on heightened urgency.

September 2025


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P-Values Blog

Discover perspectives on the latest findings, biggest challenges and most exciting successes in our collective work.

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AVAC’s email list for organization and individuals interested in timely updates and critical perspectives on developments in biomedical HIV prevention.

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Press Releases

A collection of official statements from AVAC.

AVAC in the News

Media clippings featuring AVAC, its staff and close partners in the news media.