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Presence of Branhamella catarrhalis alters the survival of Streptococcus pneumoniae and Haemophilus influenzae in middle ear effusion: An in vitro study

Published online by Cambridge University Press:  29 June 2007

Lars-Eric Stenfors  and
Simo Räisänen
Lars-Eric Stenfors*
Affiliation:
Tromsö, Norway
Simo Räisänen
Affiliation:
Kokkola, Finland
*
Prof. Lars-Eric Stenfors, Department of Otolaryngology, University of Tromsö, N-9012 Tromsö, Norway
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Abstract

Viable and non-viable B. catarrhalis were mixed together with S. pneumoniae and H. influenzae and injected into non-bacterial mucoid effusion material collected from the middle ear of patients with a present secretory otitis media. The samples were incubated at 37°C. Presence of viable B. catarrhalis could evidently prolong the survival of both S. pneumoniae and H. influenzae. Presence of non-viable B. catarrhalis could also enhance the growth of S. pneumoniae, but not H. influenzae. In contrast both S. pneumoniae and H. influenzae suppressed the growth of B. catarrhalis.

Information

Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 103 , Issue 11 , November 1989 , pp. 1030 - 1033
Copyright
Copyright © JLO (1984) Limited 1989

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