Marie participates in multiregional IeDEA studies in the field of TB and HIV. She has a background in biology and molecular epidemiology and joined ISPM after finishing her PhD at the Swiss Tropical and Public Health Institute in 2011, having previously worked as a Research Assistant at the University Hospital of Zurich. Her main research interests are TB, drug resistance and molecular epidemiology. In addition, Marie coordinates tracing studies aiming to understand and improve retention in care among HIV-infected individuals in Southern Africa.