The Trump administration has indeed defunded significant HIV vaccine research programs, including a $258 million initiative and other major studies.
The Trump admin has defunded the research for an HIV vaccine

Trump Administration Is Ending Multiple HIV Vaccine Studies, Scientists and Officials Say - KFF Health News
Source: kffhealthnews.org
Key Evidence
The Trump administration ended a $258 million HIV vaccine research program critical to vaccine development.
deepnewz.comdeepnewz.comTrump Administration Ends $258 Million HIV Vaccine Research Program, Halts NIH...
vanityfair.comvanityfair.comTrump Administration Cuts $258M Program Crucial To Discovering HIV Vaccines
NIH was directed to halt issuing new HIV vaccine research funding in the next fiscal year with few exceptions.
kffhealthnews.orgkffhealthnews.orgTrump Administration Is Ending Multiple HIV Vaccine Studies, Scientists and...
Duke University’s prominent HIV vaccine program lost $129 million in funding due to these cuts.
newsobserver.comnewsobserver.comTrump administration ends Duke HIV/AIDS vaccine research
dukechronicle.comdukechronicle.comTrump administration ends $129 million in funding for Duke HIV vaccine effort
What the Evidence Shows
Multiple credible sources confirm that under the Trump administration, funding for HIV vaccine research was substantially cut or terminated. This includes the ending of a $258 million HIV vaccine research program, halting NIH funding and overseas trials.deepnewz.comdeepnewz.comTrump Administration Ends $258 Million HIV Vaccine Research Program, Halts NIH...
vanityfair.comvanityfair.comTrump Administration Cuts $258M Program Crucial To Discovering HIV Vaccines
Additionally, major HIV vaccine studies, such as those led by Duke University, lost significant funding, $129 million was cut from Duke's HIV vaccine effort.newsobserver.comnewsobserver.comTrump administration ends Duke HIV/AIDS vaccine research
dukechronicle.comdukechronicle.comTrump administration ends $129 million in funding for Duke HIV vaccine effort The National Institutes of Health (NIH) was reportedly instructed not to issue new HIV vaccine research grants in the next fiscal year except for limited exceptions.
kffhealthnews.orgkffhealthnews.orgTrump Administration Is Ending Multiple HIV Vaccine Studies, Scientists and... These budgetary decisions represent a clear policy shift away from investing in new HIV vaccine development and have been described as a setback by researchers and public health officials.
The cuts also align with broader reductions in HIV-related programs under the Trump administration's Department of Health and Human Services budget proposals.kff.orgkff.orgScaling Back the Nation’s HIV Response? What the Trump Administration’s HHS...
pulitzercenter.orgpulitzercenter.orgTrump’s Cuts Threaten HIV Treatment and Research