Forecasting Research Institute × LEAP

Global Deaths from TB, Malaria, and HIV

Global Deaths from TB, Malaria, and HIV

Experts expect deaths from TB, malaria and HIV to more than halve by 2050 — from 2.5 million a year to 1.2 million.

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Our Analysis

How do we interpret these results

All three groups expect combined annual deaths from tuberculosis, malaria, and HIV/AIDS to decline from its 2023 total of 2.5 million and all three groups expect that decline to be faster under the rapid AI progress scenario. Unconditionally, the median forecast is roughly 2.1 to 2.2 million deaths in 2030 (experts 2.19M, public 2.14M, superforecasters 2.20M), dropping to 1.2 to 1.5 million by 2050 (experts 1.20M, public 1.47M, superforecasters 1.30M). Under the rapid AI progress scenario, experts expect deaths to fall to 500,000, superforecasters to 1.0 million, and the public to 750,000 by 2050. However, there is disagreement within these groups. For example, 25% of experts expect there to be fewer than 150,000 and 25% expect more than 1.0 million.

Forecasts by scenario

Median forecasts from experts for each scenario

scenario20302050
Unconditional
2,194,190
1,200,000
Moderate Progress
2,000,000
1,000,000
Rapid Progress
1,771,008
500,000
Slow Progress
2,299,985
1,650,000

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Rationale analysis

The main lines of reasoning driving the spread in estimates

Poverty as the primary driver

Most forecasters express pessimism that AI-discovered treatments will be a key factor in reducing deaths from these maladies in the near term, citing inadequate health systems in the developing world and poverty as the real reasons high death levels persist: “We have near-cures for all of these now. The problem is health delivery, not medical capability.”; “The core of the problem is poverty-driven barriers to healthcare and prevention, and AI is unlikely to solve these issues.” Several optimists, however, point to the potential for AI to alleviate poverty, and by extension death from disease, in the regions most afflicted: “AI makes the developed world wealthier, and (even if AI does not result in new treatments), more resources would probably be spent on frontline treatments and prevention”; “The decline of malaria and TB is driven less by new drugs/vaccines than by rising income and the associated improvements in public health, sanitation and nutrition. These diseases are essentially a function of development.”

The historical trajectory

Optimists frequently anchor on the long downward trend and expect AI to bend it further, noting that deaths “have continued to fall since 2000, even without AI interventions.” Pessimists tend to read the same trend as decelerating and unlikely to persist, with many citing “the growing challenge of drug-resistant tuberculosis” and others pointing to climate change’s potential to “expand the range of malaria, causing it to spread significantly.” Several pessimists also note that deaths from these maladies are predominantly in regions experiencing robust population growth. One writes, “Africa’s population is expected to increase by nearly 1 billion people by 2050 [and] the pool of potential victims is highly relevant to the total number of deaths.”

The 2025 aid shock

For many pessimists, the recent cuts to global aid is the dominant factor, particularly when considering the 2030 horizon: “The thing that actually moves my 2030 number isn’t AI, it’s the 2025 foreign-aid shock. The Lancet modeling on the PEPFAR [funding decline] runs anywhere from 0.77M to 2.93M additional HIV deaths through 2030”; “By 2030, any possible impact of AI...will still be vastly outweighed by the curtailing of US aid programmes globally in 2025.”; “IHME projected for 2025 that child mortality under 5 had reached an estimated 4.8 million deaths in 2025, an increase of 200,000 preventable deaths compared with 2024, after child mortality had decreased every other year since 2000.” A few optimists treat the shock as likely to be transient, with one arguing that funding crises "tend to resolve (budget reversals, other donors, domestic substitution),” and another arguing that it is likely to be outweighed by “GDP improvements in hotspot regions.”

Time horizons

Many pessimists express near certainty that little will change for the better by 2030, citing the long timelines typically needed to develop and release drugs and the inability for AI to change this: “Even if AI can create custom drugs by 2029, there's no time for testing, manufacturing, dissemination.”; “Clinical trials cannot be done on GPUs and cannot be sped up by bigger clusters.” Several optimists, however, argue that AI could act via domains in which much faster progress is possible, such as “mapping and containing outbreaks, deploying doctors and medical professionals, [and] improving logistics of treatment deliveries.” Others conclude that while AI-discovered treatments are unlikely to have much effect on the 2030 outcome, on a longer timeline, “AI will accelerate the medical advances that will address these diseases, including prevention and treatment.” This argument is frequently cited by forecasters considering 2050 under a rapid progress scenario, with one optimist predicting, “AI-discovered medicines and cures will plausibly cut combined deaths by 90% or more.”

AI’s impact on inequality

A recurring theme among pessimists is that health gains are unlikely given that gains from AI progress are unlikely to be evenly distributed, with one writing that gains are “more likely going to wealthy individuals in wealthy countries,” and another predicting that “there will be a global underclass left behind...for decades to come.” Several pessimists expect this dynamic to materialize even in a rapid progress world, with one noting that “a rapid progress scenario refers to the capabilities of AI, not to the funding priorities of global health needs.” A few optimists point to the potential for philanthropists, newly wealthy as a result of AI, to contribute more to global health initiatives: “There are a bunch of people who are likely to get rich from worlds with rapid progress who care a lot about global health interventions...I expect that there will just be much more money going towards these causes.”

Rationale examples

High-quality rationales from forecasters across the range

Pessimists

The response here depends on a few factors apart from the state of AI progress. These include the significant downsizing of USAID, PEPFAR and related programs that were providing life-saving assistance against tuberculosis, malaria, and HIV/AIDS; the difficulty of reauthorizing and reappropriating dollars for such causes in the future, especially quickly; the division of attention of the international community in providing finite medical aid and attention between disease prevention for these diseases and humanitarian areas such as Gaza and Somalia; and finally a projected significant increase in parts of the global population in countries where incidence of these diseases is highest.

I would certainly expect AI to improve the research pipeline for diagnostics, drug discovery, vaccine design, resistance monitoring, supply-chain forecasting, and targeting of interventions, but I don't foresee a future where those improvements translate quickly or cleanly into large mortality reductions by 2030. The limiting factor for tuberculosis, malaria, and HIV/AIDS is not only the existence of better biomedical tools, it is the ability to deploy them continuously in countries and communities with weak health systems, unstable funding, conflict, poverty, mistrust, and fragile supply chains. Large initiatives from well meaning private citizens and NGOs have proven this pattern time and time again. A great breakthrough in medicine rarely translates to the people suffering through a disease if getting a cure or a vaccination means getting supplies and those who can administer them through a region controlled by 4 different warlords who are hell-bent on seizing those supplies and kidnapping aid workers for ransom to fund their aspirations of power.

Even with rapid AI progress, the most immediate benefits would probably be things like faster research, better diagnostics, and more efficient health-system workflows. Those gains are likely to appear first in wealthier countries, which are generally not where most deaths from these diseases occur. It would take much longer for new tools to be deployed widely in the countries with the greatest disease burden.

Given drops in overseas development aid (from the US in particular, but also coming from the UK, Germany, etc.) and in particular the recent Global Fund replenishment falling 30% short, I'm not expecting any major improvement in any of the scenarios by 2030, but instead increased deaths…Reducing deaths…for extremely low-income people…[is about]electricity, connectivity, devices, supply chains, skills, capacity, etc., and should not be moved even by a rapid progress scenario.

Optimists

My expectation is that the cumulative number of deaths from tuberculosis, malaria and HIV/AIDS will dramatically trend down to zero over the coming two decades due to a combination of factors: (1) the proliferation of open source AI tools/platforms across emerging economies, (2) the rise of China as a producer of medical care resources (medicine, infrastructure, human capital), (3) the expansion of global education and (4) the decline of a global IP regime reinforced by rich countries.

Conditional on reaching rapid progress, I expect there’s a 66%+ chance of explosive growth, which would make it easy to end malaria etc within 10 years....The US [eliminated malaria over ~4 years], and there would be 20[+] years in this scenario, and it could go faster with AI.

As rising living standards translate to improve[d] housing, and treatment and prevention options continue to improve in line with history, the current trend suggests deaths from these diseases could be close to eradicated by 2050.