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Harm Reduction International Conference

We convene the Harm Reduction International Conference in a different city every two years. It attracts over 1,000 international delegates and has been held in almost every region of the world.


27-30 April 2025

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host our next conference

If you would be interested in hosting a future edition of the Harm Reduction International Conference, we would like to hear from you. You can read more about the process and how to express an interest here.


Constellations: An Online Festival on Drugs and Harm Reduction is a way for the harm reduction community to gather and connect online, to explore innovative solutions, to have urgent conversations and to redefine what harm reduction is and what it can be.

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