Coordinated Action on Public health, HIV, Sexual Health and Hepatitis (CA46)
This Coordinated Action takes a multidisciplinary approach to a wide range of research topics in public health, HIV, sexual health and hepatitis, in France and internationally.
Last updated on 26 June 2026
In brief
This Coordinated Action takes a multidisciplinary approach to a wide range of research topics in public health, HIV, sexual health and hepatitis, in France and internationally. To do this, it is composed of seven thematic workgroups.
Activities
In 2022 its thematic scope was broadened and its operational structure renewed. Thus, in addition to their scientific facilitation and knowledge-sharing activities, its thematic workgroups also aim to bring about major structuring, interdisciplinary and inter-team projects for their workgroups in the North and South.
Chair and Co-Chair
Didier Ekouevi
Faculty of Science and Health, Lomé, Togo
Bruno Spire
Inserm – Health Economics & Social Sciences & Medical Information Processing (SESSTIM), Marseille, France
Board members
Emmanuel Beaubatie
(CNRS)
Patrizia Carrieri
(SESSTIM, Marseille)
Karen Champenois
(Inserm, Bichat-Claude Bernard Hospital, Paris)
Elias Dah
(University of Ouahigouya, Burkina Faso)
Bintou Dembélé Keita
(ARCAD Santé PLUS, Bamako, Mali)
Gabriel Girard
(Inserm, SESSTIM, Marseille)
Fatou Fall
(Hôpital Principal, Dakar, Sénégal)
Anne Gosselin
(Ined, Aubervilliers)
Antoine Jaquet
(Bordeaux University)
Christian Laurent
(TransVIHMI, Montpellier)
Ephrem Mensah
(Espoir Vie Togo (EVT), Togo)
Perrine Roux
(SESSTIM, Marseille)
Olivier Ségéral
(Geneva University Hospitals)
Annie Velter
(Santé publique France, Saint-Maurice, France)
Workgroups
WG1 – HIV screening among men who have sex with men (MSM) in West and Central Africa
Leaders: Elias Dah (University of Ouahigouya) and Ephrem Mensah (EVT, Togo)
WG2 – PrEP in the North and South
Leaders: Christian Laurent (TransVIHMI, Montpellier) and Bintou Dembélé Keita (ARCAD Santé PLUS, Bamako)
WG3 – Trans People
Leaders: Emmanuel Beaubatie (CNRS) and Gabriel Girard (Inserm)
Supported projects:
- 2025 – Nos Vies Trans (Gabriel Girard): Sexual health trajectories and HIV vulnerabilities among trans and/or non-binary people in France
WG4 – Sexual health of migrant women
Leaders: Karen Champenois (INSERM, Bichat) and Anne Gosselin (INED)
Funded projects:
- 2024 – Bolingo (Karen Champenois): Co-development of a sexual and general health prevention programme for women born in sub-Saharan Africa and living in France
WG5 – Chemsex
Principal investigators: Perrine Roux (SESSTIM, Marseille) and Annie Velter (SpF)
Funded projects:
- 2025 – SEX&DRUGS (Perrine Roux): Study of chemsex trajectories
WG6 – ‘Test and treat’ for hepatitis B (HBV) in Africa
Leaders: Patrizia Carrieri (SESSTIM, Marseille) and Fatou Fall (Hôpital Principal, Dakar)
Funded projects:
- 2024 – SIMBADE (Antoine Jaquet, Raoul Moh): Simplifying the management of hepatitis B in adults in decentralised, highly endemic areas (Phase 1: Situational analysis)
WG7 – Elimination of vertical HBV transmission in the Global South
Principal investigators: Antoine Jaquet (University of Bordeaux) and Olivier Ségéral (Geneva University Hospitals)
Funded projects:
- 2024 – HIPOCAMP (Yusuke Shimakawa, Didier Ekouevi, Olivier Ségéral): Universal HBV treatment versus targeted antiviral treatment to prevent mother–to–child transmission: a multi–country cluster–randomised non–inferiority trial