 - Administration of a vaccine not foreseen by the study protocol within 30 days prior to randomisation, or planned administration from randomisation to study Visit 3, or from 30 days before to 30 days after study Visit 4, with the exception of influenza and human rotavirus vaccines. The administration of other vaccines, including conjugated pneumococcal vaccine, is allowed during the period from one day after study Visit 3 to 31 days before study Visit 4. 