BRUSSELS - BELGIUM - 26 APRIL 2011 - - WHO European Immunization Week 2011 - - From left clockwise Laurette Onkelinx, Vice Prime Minister, Minister for Social Affairs and Public Helalth, Belgium, Her Royal Highness Princess Mathilde of Belgium, Zsuzsanna Jakab, Regional Director, WHO Regional Office for Europe and Dr. Rebecca Martin, Programme Manager Immunization, WHO Europe. Photo: Erik Luntang / INSPIRIT Photo