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. 2003 Feb;41(2):880-2.
doi: 10.1128/JCM.41.2.880-882.2003.

Value of indirect hemagglutination and coagglutination tests for serotyping Haemophilus parasuis

M L Del Río  1 , C B Gutiérrez, E F Rodríguez Ferri
Affiliations

Value of indirect hemagglutination and coagglutination tests for serotyping Haemophilus parasuis

M L Del Río et al. J Clin Microbiol. 2003 Feb.

Abstract

An indirect hemagglutination test (IHA) and a coagglutination test (CA) were evaluated using saline, boiled, and autoclaved extracts for serotyping Haemophilus parasuis. CA showed several cross-reactions, whereas IHA gave rise to specific reactions, with minor exceptions. IHA was further compared with the immunodiffusion test (the "gold standard") for the serotyping of 67 field isolates. As a conclusion, IHA is recommended as a useful method for sensitive and specific serotyping of H. parasuis.

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