Dr. Omar Gustavo Sued is an Internal Medicine and Infectious Diseases Specialist from Argentina, currently serving as Regional Advisor for HIV Treatment and Care at the Pan American Health Organization (PAHO/WHO), the World Health Organization’s office for the Americas, based in Washington, D.C.

He earned his medical degree from the Universidad Nacional de Córdoba and specialized in Infectious Diseases at the Universidad de Buenos Aires. He later completed a Master’s and PhD in Acute HIV Infection at the University of Barcelona, Spain.

Dr. Sued has worked in HIV care since 1997, across diverse settings. Between 2012 and 2021, he was Director of Research at Fundación Huésped, a leading Argentine NGO focused on HIV and infectious diseases. Under his leadership, the department joined major international research networks such as the HIV Prevention Trials Network, AIDS Malignancies Consortium, and HIV Vaccine Trials Network.

Dr. Sued was President (2019-2021), Treasurer (2015-2019) and Secretary (2013-2015) of the Argentinean Infectious Disease Society. He chaired the National Infectious Diseases Congress in 2016 and 2021. He has contributed to several WHO guideline development groups, including on post-exposure prophylaxis, co-trimoxazole prophylaxis, cryptococcal disease, and antiretroviral therapy. He has authored or co-authored over 175 peer-reviewed publications, book chapters, and clinical guidelines.

Dr. Sued is also a Governing Council Member of the International AIDS Society (IAS), representing Latin America and the Caribbean. He has actively participated in IAS and AIDS conferences, serving as rapporteur, co-chair, and lead presenter, and is a strong advocate for evidence-based interventions and human rights for people living with HIV.