Sergio has performed many epidemiological and clinical research projects on tropical, endemic, re-emerging and emerging diseases as well as Chagas disease, leishmaniasis, HIV/AIDS, and other infectious diseases. He joined DNDi from the National Institute of Parasitology “Dr. Mario Fatala Chaben”, Argentinian Ministry of Health, where he occupies the position of Institute Director. Sergio is also Researcher of the National Council of Scientific and Technological Research (CONICET) in Argentina, a professor for the Master of Clinical and Health Care Effectiveness program of the University of Buenos Aires and the Master of Public Health and Master of Molecular Biology programs of the University of San Martín in Buenos Aires.