- Administration of a vaccine not foreseen by the study protocol within 6 weeks of the first dose of vaccine or planned administration during the study of a vaccine not foreseen by the study protocol, with the exception of diphtheria, tetanus, pertussis, hepatitis B, Haemophilus influenzae type b (Hib), OPV and vaccination against tuberculosis, which can be given with at least two weeks separation from the first and subsequent dose of the study vaccine.