Professor Sáfadi is the Head of the Department of Pediatrics and also the Coordinator of the Postgraduate course in Health Sciences at Santa Casa de São Paulo School of Medical Sciences, and for more than 10 years has been working as a Member of the Permanent Advisory Board on Immunization Practices for the Secretary of Health in the State of São Paulo and also for the Ministry of Health in Brazil. He is currently the Chairman of the Department of Immunization for the Society of Pediatrics, São Paulo, and the Chairman of the Department of Infectious Diseases for the Brazilian Society of Pediatrics. Prof. Sáfadi is also an active member of many societies, including the Latin American Society of Pediatric Infectious Diseases (SLIPE), and European Society of Paediatric Infectious Diseases. He is currently a Member of the International Scientific Committee for World Society for Pediatric Infectious Diseases and was the first nominated Liaison Representative for SLIPE at the Committee on Infectious Diseases (COID) – Red Book - American Academy of Pediatrics from 2011 to 2015. He is also a member of the Steering Committee for the Global Meningococcal Initiative, and a Member of the Scientific Advisory Group for the Confederation of Meningitis Organisations recently merged with the Meningitis Research Foundation. He is an expert member of the SAGE Working Group on Meningococcal Vaccines and Vaccination from WHO. In 2021 Prof Sáfadi was nominated by the Ministry of Health to be the liaison representative for the Brazilian NITAG in the SAGE Immunization Group from WHO.