Professor Emeritus of the Fundação Oswaldo Cruz (Fiocruz), Full Member of the National Academy of Medicine of Brazil and Full Professor of the National School of Public Health. Buss is a Medical Doctor, Master in Public Health and Doctor in Sciences. He is currently Director of the Center for Global Health and International Relations at Fiocruz and of the Collaborating Center of the World Health Organization (WHO) / Pan American Health Organization (PAHO) in Global Health, Health Diplomacy and South-South Cooperation.