US Aid Cuts Halt Promising HIV Vaccine Research in South Africa

13 July, 2025

The US administration's decision to cut foreign aid has abruptly halted a $46 million HIV vaccine research project in South Africa, a global hub for such trials. The move dismantled the 'BRILLIANT' program just a week before clinical trials were set to begin, leaving the project's future uncertain. The funding withdrawal threatens the jobs of around 100 researchers and jeopardizes decades of progress, with significant global implications for developing a vaccine against one of history's deadliest pandemics.

Unpacked:

Why did the US administration decide to cut funding for the BRILLIANT HIV vaccine project?

The US administration froze and reviewed the $45 million USAID grant as part of a wider reassessment of foreign aid projects. While specific reasons for targeting BRILLIANT have not been detailed, such reviews are often driven by shifts in foreign policy priorities or budgetary constraints.

What impact does the funding cut have on HIV vaccine research in Africa and globally?

The funding cut threatens to halt clinical trials of novel HIV vaccines, jeopardizing years of scientific collaboration and progress in Africa. It endangers the jobs of around 100 researchers and may slow global efforts to develop an effective HIV vaccine, potentially affecting advances worldwide.

What made the BRILLIANT Consortium and this trial particularly significant?

The BRILLIANT Consortium consisted of leading African scientists from eight countries, focusing on developing and testing HIV vaccines tailored to the regional epidemic. It aimed to build local research capacity, foster collaboration, and ensure African leadership in vaccine innovation—an approach seen as crucial for sustainable progress.

Are there alternative funding sources or plans to continue the BRILLIANT project?

Project leaders have indicated that replacing the lost US funding would require significant support from other sectors, including African governments and private donors. However, there is concern that closing the gap quickly will be difficult, and the consortium’s future remains uncertain without new resources.