World Risks HIV Resurgence as Funding Falls 18pc, UNAIDS Says

Global funding for the fight against HIV fell 18 percent in 2025, dropping to $7.3 billion, the lowest level in nearly two decades, according to a UNAIDS report that warns the decline threatens to unravel a generation of progress against the epidemic.

The scale of the funding collapse

The United States has historically supplied around 75 percent of international HIV funding, making American policy shifts unusually consequential for the entire global response. President Trump ordered a temporary halt to HIV funding in January 2025, later partially restoring it, but the disruption and uncertainty around US commitments appear to have rippled through the wider funding ecosystem well beyond the direct dollar amounts paused. UNAIDS described the moment starkly: "The international community has entered a period of profound political and financial upheaval that threatens decades of hard-won gains."

Who is losing the most

The impact has landed hardest on sub-Saharan Africa, the region that has carried the largest share of the global HIV burden for decades and depended most heavily on international funding to sustain prevention and treatment programs. UNAIDS data shows PrEP, the preventive medication regimen that significantly reduces HIV transmission risk, saw recipient numbers fall by more than 50 percent in Cameroon, Nigeria and Zambia, a collapse steep enough to reverse years of prevention gains in those countries within a single funding cycle.

The human scale of the problem

Despite the funding cuts, the epidemic itself has not slowed to match: roughly 1.2 million people acquired HIV last year. That figure underscores the core tension UNAIDS is trying to highlight, funding is retreating precisely as the disease continues spreading at a pace that still demands sustained, well-resourced intervention rather than a pullback.

Domestic spending isn't filling the gap

Some countries have increased their own domestic health spending to partially offset the drop in international support, but UNAIDS's figures show this has only cushioned, not reversed, the overall decline. Total HIV resources, combining international aid and domestic spending, still fell 6 percent globally, meaning the domestic increases that did occur were nowhere near large enough to compensate for the pullback in international funding, particularly from the US.

Why prevention programs are especially vulnerable

Treatment programs for people already living with HIV tend to be politically and institutionally protected even during funding crunches, since abruptly cutting off medication has immediate, visible consequences. Prevention services, community outreach, PrEP distribution, testing campaigns, are often the first casualties of budget cuts because their impact is diffuse and shows up in case numbers only months or years later. That dynamic helps explain why the PrEP figures in Cameroon, Nigeria and Zambia dropped so sharply even as overall funding fell by a comparatively more moderate 18 percent.

What UNAIDS is warning about

The report, released at the International AIDS Conference in Brazil, frames the funding trajectory as a genuine inflection point rather than a temporary dip. Public health researchers have long warned that HIV prevention progress is reversible in a way that feels deceptively slow at first, new infections climb gradually rather than spiking overnight, which makes funding retreats like this one easy to underestimate in the moment and far harder to reverse once transmission rates have re-accelerated across a region as large as sub-Saharan Africa.