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Mixed outbreak of Bordetella pertussis and Bordetella parapertussis infection in Finland.

Authors
  • Mertsola, J
Type
Published Article
Journal
European Journal of Clinical Microbiology
Publisher
Springer-Verlag
Publication Date
Apr 01, 1985
Volume
4
Issue
2
Pages
123–128
Identifiers
PMID: 2861090
Source
Medline
License
Unknown

Abstract

The epidemiology of whooping cough in a vaccinated population was studied during an outbreak of paroxysmal cough in an elementary school with 258 pupils in Turku, Finland. Nasopharyngeal specimens for isolation of Bordetella pertussis and/or sera for ELISA detection of antipertussis immunoglobulin M, A and G antibodies were taken from 94% of children who were prospectively followed for two months. Bordetella pertussis was isolated in six patients, and 17 culture-positive cases with Bordetella parapertussis were identified. Patients with Bordetella pertussis or Bordetella parapertussis were found simultaneously in the same classrooms. Comparison of immunoglobulin M responses to Bordetella pertussis and Bordetella parapertussis was used for differential diagnosis of these two infections. Twenty-six cases with pertussis and 27 cases with parapertussis were diagnosed. The results of this prospective study suggest that Bordetella parapertussis is a more common etiologic agent of mild respiratory tract infection among vaccinated school-aged children than is generally recognised. The possibility that Bordetella pertussis was converted to Bordetella parapertussis during this outbreak is discussed.

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