SEARCH Articles Figures Tables Gram-negative bacteria Moraxella Moraxella bovis Moraxella calcoacetica Moraxella catarrhalis Moraxella catarrhalis infection, treatment Moraxella catarrhalis infections Moraxella catarrhalis infections acute exacerbation Moraxella catarrhalis infections antibiotics Moraxella nonliquefaciens Moraxella spp Moraxella strain