We received a grant by Campus France (PHC Carlos J Finlay, 2019-20210) to collaborate with the team of Dr Vivian Kourí Cardellá from Instituto de Medicina Tropical Pedro Kourí (Habana) on the dynamics of HIV-1 epidemics in Cuba. Together, we study the evolutionary and geographical origins of HIV-1 recombinants in Cuba, such as CRF19, an HIV recombinant that was found exclusively in Cuba. Furthermore, we perform phylodynamics analyses, and study the resistance to drugs and its spread in Cuba. This study benefits from the unique richness and completeness of Cuban HIV databases, notably in terms of metadata and contact tracing. As part of this collaboration, we gave theoretical and practical courses for one week in Phylogenetics and Molecular Epidemiology to 55 Cuban students and researchers in October 2019.