The present invention relates to the field of immunogenic compositions and the use of such compositions in medicine. More particularly, it relates to immunogenic compositions comprising an immunogenic polypeptide from non-typeable Haemophilus influenzae, a PE-PilA fusion protein, and optionally an immunogenic polypeptide of UspA2 from Moraxella catarrhalis, for use in subjects having chronic obstructive pulmonary disease (COPD), in particular for reducing the frequency of severe exacerbations (i.e. severe AECOPDs).