Value of indirect hemagglutination and coagglutination tests for serotyping Haemophilus parasuis.
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.
Del Río
M L
ML
Department of Animal Health, Faculty of Veterinary Medicine, León, Spain.
Gutiérrez
C B
CB
Rodríguez Ferri
E F
EF
D006190:Haemophilus / Q000145:classification*; D006386:Hemagglutination Tests / Q000379:methods*; D006801:Humans; D012680:Sensitivity and Specificity; D012703:Serotyping