Received his PhD in Medical Sciences from the Universidade Federal do Rio Grande do Sul (UFRGS) in 1999. Since 1997, he has worked as Professor of Pediatrics and Adolescent Medicine at Medicine School of Universidade Federal do Rio Grande do Sul and Hospital de Clinicas de Porto Alegre (HCPA). He is now Associated Professor of Pediatrics at UFRGS and Head of Adolescent Medicine unit at HCPA as well as a member of vaccination calendar committee of the Brazilian Society of Immunization (SBIm) and a member of the Brazilian Society of Pediatrics (SBP). He is coordinator of the immunization research group at the Medicine School of UFRGS and his research interests include vaccines, immunizations, adolescence, vaccine hesitancy, and risk behavior in adolescents.