NESI engages in a number of activities to accomplish its mission. These are grouped into three main areas:
NESI invests in educational opportunities that give health professionals involved in immunisation up-to-date knowledge and skills.
NESI aims to support an educated and informed health workforce to provide the best immunisation services worldwide and to achieve a better health for children.
NESI engages in network activities that are nowadays essential to achieve the postulated goals.