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Positive Action Challenges (PAC) is a ViiV Healthcare funded innovation platform with a simple objective: to focus a global community of problem solvers on the enduring gaps, unmet needs and bottlenecks preventing the end of the global HIV/AIDS epidemic. We aim to encourage new and innovative approaches where current and past practice has failed to address these issues or has delivered inadequate success.

We run challenge prizes to solve specific problems and encourage a global network of solvers to work together and collaborate to innovate to find solutions.

For more information, see the FAQs page.




Challenge prizes reward whoever can first or most effectively meet a defined challenge. They have solved some of the world’s most difficult problems, developed whole new industries and fostered global innovation. When Charles Lindberg became the first pilot to fly non-stop from New York to Paris, winning the Orteig prize in 1927, he transformed the aviation industry. The number of US passengers increased thirty-fold in three years, while applications for pilot licenses increased 300 per cent. But prizes don’t always need to make radical leaps or aim at ambitious, complex goals. They can also:

  • Shine a light on a neglected issue or problem
  • Encourage other people to invest in solving a problem or making advances
  • Bring new products and services to market
  • Prompt new collaborations and partnerships
  • Gather new information and data on an important issue
  • Identify great ideas and practice
  • Build the capacity of new innovators and support their entry into the market

Watch the video below for a brief history of challenge prizes:

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No single person or group has a monopoly on innovation or creativity. We encourage our solvers to collaborate within the PAC community to develop solutions for our challenges.

Whether you are a student with a creative idea, a health expert with a proven solution or an engineer with a promising prototype, collaborating with other solvers provides the opportunity to develop a truly transformational innovation.

The PAC community is a way to explore, develop and refine your concepts into fully-fledged solutions, while supporting other community members in their journey.

The best ideas come from bringing together diverse voices and approaches.

Join us today and collaborate to innovate.


    Are you a creative thinker, problem solver or just somebody with an interest in health and development? Check out our challenges and submit your concept to address some of the enduring challenges in HIV.
  2. TEAMS
    Are you a team of students, entrepreneurs, professionals or just friends? Any group of people can work together and collaborate on our challenges. Join the PAC community today and submit your concept as a team to address our challenges.
    Are you part of a tech company, healthcare organisation or NGO? No matter what sector you work in, you could provide the spark that ignites a truly transformative change. Collaborate and pool your expertise to respond to our challenges.