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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Moving the STI Research, Development and Diagnostics Agenda Forward

The global burden of STIs is staggering with more than one million treatable STIs being acquired daily, and new threats like antibiotic-resistant gonorrhea and rising syphilis cases demanding urgent action. Yet funding, research, and political attention lag far behind the need.

October 2025


PxWire is Out!

This issue provides a range of maps to help orient the field on critical HIV prevention activities: the status of delivering injectable cabotegravir (CAB for PrEP); funders and countries on track for early introduction of injectable lenacapavir (LEN for PrEP); and where new Phase 3 efficacy trials testing MK-8527 as a monthly pill for PrEP are taking place.

October 2025


Global Health Watch: US CDC layoffs, CIFF funding cuts to NGOs + call for streamlined global health architecture at World Health Summit

The US government shutdown escalated this week as the Administration laid off thousands of workers before chaotically retracting many of these notices. The UK-based Children’s Investment Fund Foundation (CIFF) abruptly cut all funding to US-based NGOs, and world leaders urged a streamlined global health system amid funding cuts.

October 2025


Global Health Watch: US shutdown continues, WHO prequalifies lenacapavir, NIH recompetes AIDS networks

As the US government is in its second week of being shut down, the ripple effects across global health shows the interconnectedness of the public health infrastructure in the US and globally and uncertainty about the future of foreign aid. Amid this turmoil, the World Health Organization has prequalified injectable lenacapavir for PrEP in record time, using a new, expedited process.

October 2025


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


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Explore More News and Communications

P-Values Blog

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

Advocates Network

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

Weekly News Digest

A comprehensive round-up of HIV prevention media coverage and scientific publications.

PxPulse

Each month this podcast uses interviews, discussion and first-person reflections to explore vital topics confronting the field of HIV prevention research.

PxWire

PxWire is AVAC’s quarterly update on biomedical HIV prevention. Each issue highlights key developments, challenges and opportunities, and features a centerspread infographic that provides a visual tool for framing these issues.

Pandemic Watch

Pandemic Watch is a curated news digest on the latest pandemic prevention, preparedness, and response (PPPR) news and resources.

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.