Dr. Santiago Moreno is the head of the Infectious Diseases Department at the Ramón y Cajal Hospital, in Madrid, and is a professor of medicine at the University of Alcalá, also in Madrid. He has been involved with HIV-infected patients since the very beginning of the AIDS epidemic in Spain. He collaborates with the Spanish Ministry of Health in setting recommendations related to HIV infection/AIDS. During the COVID-19 pandemic, he has been actively involved in healthcare management and has served as an advisor to various expert committees.