Beschreibung:
<jats:title>ABSTRACT</jats:title>
<jats:p>
Of the 419
<jats:italic>Moraxella catarrhalis</jats:italic>
isolates collected during the 1997-1999 European SENTRY surveillance study, 385 (92%) were β-lactamase positive. Twenty-two (5.7%) produced BRO-2 β-lactamase. Twenty-one new mutations were found in the putative promoter region of the
<jats:italic>bro</jats:italic>
genes. Nineteen percent of all isolates tested were complement sensitive. Resistance to β-lactams is not linked to the phylogenetic lineages associated with susceptibility to complement.
</jats:p>