14th September 2021. In this session, state of the art aspects on immunology and infectious diseases and the evolution of vaccinology development were presented and discussed. An overview of development of vaccines was given. The importance of adjuvants and of vaccine administration technique were also addressed. The regulatory process in the evaluation and approval was discussed together with an emphasis on pharmacovigilance. An interesting insight on the third and booster doses of covid-19 vaccines was also given.