The 1998 Technet consultation was held at the WHO Regional Office for Europe, Copenhagen from 16 to 20 March 1998. This consultation gathered a wide range of experts and partners active in immunization activities worldwide. This consultation reached an unprecedented size with more than 110 participants. Several papers of excellent quality were presented during the plenary sessions. High quality background papers were also made available to the participants and served as a basis for group work and discussions. This report summarises the proceedings.