The Applicant/ MAH is requested to commit to submitting for assessment, to the relevant national competent authorities, the results from the long-term antibody persistence data from the ongoing studies with Menitorix i. e. subjects from booster studies 013 and 022 are being followed up for antibody persistence as follows: o Over 4 years of follow up of subjects from study 013 in studies 027, 028 and 029. o Five years follow-up from 010/ 022 in subsequent studies 023, 024, 025 and 026.