An HIV Vaccine: The World's best long-term hope for ending AIDS.

Who We Are

We are the world’s largest publicly-funded international collaboration focused on the development of vaccines to prevent HIV/AIDS. Learn more >

What We Do

Our sites conduct all phases of clinical trials - from evaluating experimental vaccines for safety and immunogenicity to testing vaccine efficacy. Learn more >

Get Involved

Worldwide, thousands of people have participated in HIV vaccine trials.  Volunteers are the heroes of vaccine development. Learn more >


Asociación Civil Impacta Salud y Educación (Impacta) builds upon 12 years of experience in designing and implementing DAIDS research network and non-network clinical trials.  Impacta is led by Dr. Jorge Sanchez and supported by a cadre of experienced researchers and promising junior investigators. Networks included are HIV Prevention Trials Network and HIV Vaccine Trials Network (both since 2001), AIDS Clinical Trials Group (since 2002), and more recently, International Network for Strategic Initiatives in Global HIV Trials.  Impacta is located in Lima, Peru, a city with close to 9 million inhabitants where Impacta has two buildings conveniently located to allow easy access for participants across the entire city.  


HIV is one of the most changeable viruses discovered to date

Antibodies that are able to adhere to the outer shell of HIV can inactivate the virus, and potentially stop infection before it starts. However, HIV is one of the most changeable viruses discovered to date, and the strains in circulation vary widely. An ideal vaccine against HIV would produce antibodies that could inactivate all HIV strains, but the reality is that antibodies against one strain usually don’t work against others. Read more >

Scholar Awards

We support the next generation of HIV researchers with structured mentoring, projects, training, and networking opportunities. Learn more >

Get the Right HIV Test

Getting the right test will prevent an incorrect diagnosis of HIV.  Your study site or VISP Testing Service can provide the right test.  Visit our frequently asked questions for more information.



HIV Vaccine Trials Network

Fred Hutchinson Cancer Research Center