Identification and serotyping of Haemophilus pleuropneumoniae by coagglutination test

K. R. Mittal, Robert Higgins, S. Lariviere

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A coagglutination test for the identification and serotyping of Haemophilus pleuropneumoniae is described. A total of 360 H. pleuropneumoniae strains was isolated from pulmonary tissues of feeder pigs which died of acute pleuropneumonia. All of the isolated were serotyped by coagglutination, and the results were confirmed by the ring precipitation test. The most common serotype isolated in Quebec was serotype 1, followed by serotypes 5, 2, and 7. None of the isolates belonged to serotypes 3, 4, or 6. Mixed infections due to H. pleuropneumoniae of more than one serotype in the same animal were encountered. Serotype 1 was the only common isolate among the mixed-serotype infections. The coagglutination test was more sensitive than was the ring precipitation test. Serotyping by the coagglutination test is inexpensive, rapid, reliable, and easy to perform.

Original languageEnglish (US)
Pages (from-to)1351-1354
Number of pages4
JournalJournal of Clinical Microbiology
Issue number6
StatePublished - Dec 1 1983
Externally publishedYes


ASJC Scopus subject areas

  • Microbiology
  • Microbiology (medical)

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