Marc-André LeBlanc has been involved in the community-based AIDS movement for 15 years, including in microbicides-related work for over 5 years. While working at the Canadian AIDS Society, he coordinated the Microbicides Advocacy Group Network (MAG-Net). Marc-André also served as a representative from North America to the Global Campaign for Microbicides Steering Committee, and he is a member of the steering committee for the development of the Canadian Microbicides Action Plan.

Marc-André co-founded International Rectal Microbicide Advocates (IRMA), where he serves as Secretary to the steering committee. For IRMA, he developed and coordinated an international web-based survey on lubricant use for anal sex in which nearly 9,000 people participated from over 100 countries. He is the author of IRMA's latest report Less Silence, More Science: Advocacy to Make Rectal Microbicides a Reality.

He works as a consultant, including as the Global North Programmes Coordinator for GCM, where he coordinates advocacy and community mobilization efforts in North America and Australia, and supports the European staff.