1. Vaccine European New Integrated Collaboration Effort (VENICE) Project
2. Health Protection Surveillance Centre, Dublin, Ireland
3. Centers for Disease Control and Prevention, Atlanta, United States
4. European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
5. National Institute of Health (Istituto Superiore di Sanità, ISS), Rome, Italy
6. World Health Organization (WHO), Office for Europe, Copenhagen, Denmark
7. French Institute for Public Health Surveillance (Institut de Veille Sanitaire, InVS), Saint-Maurice, France
8. National Institute of Public Health - National Institute of Hygiene, Warsaw, Poland
9. CINECA Consortium of University, Bologna, Italy
10. Vaccine European New Integrated Collaboration Effort (VENICE) project gatekeepers group are listed at the end of the article