Jean-Noël Senne was a visiting lecturer at University College London (UCL) from the 16th to the 24th October 2019. He gave two econometrics lectures and practical sessions on the use on non-linear econometric models in health economics. He was hosted during one week at the Institute for Global Health to work on a joint project with Aurelia Lépine on the reduction of stigma to improve HIV care among key populations in Senegal.