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BRUSSELS - BELGIUM - 26 APRIL 2011 - - WHO European Immunization Week 2011 - - From left Dr. Geert Top, Public Health Surveilliance of Flanders, Control of Infectious Diseases and Vaccination, Belgium, and Prof. Pier Luigi Lopalco, Senior Expert, Head of Vaccine Preventable Disease, European Centre for Disease Prevention and Control (ECDC). Photo: Erik Luntang / INSPIRIT Photo
