Serological classification of Haemophilus paragallinarum with a hemagglutinin system

Author:

Kume K,Sawata A,Nakai T,Matsumoto M

Abstract

Antigens, prepared from 17 strains of Haemophilus paragallinarum by treatment with potassium thiocyanate followed by sonication, uniformly agglutinated glutaraldehyde-fixed chicken erythrocytes and formed specific hemagglutination inhibition antibodies in rabbits. Attempts were made to classify the strains into serotypes by a combination of cross-hemagglutination inhibition and cross-absorption tests, using the hemagglutinating antigens, designated as HA-L hemagglutinin, and their antisera. The cross-hemagglutination inhibition tests showed the existence of three distinct groups among the 17 strains. Further cross-absorption studies indicated that two of the three groups could be subdivided into three serotypes each, forming a total of seven serotypes, designated HA-1 through HA-7. Classification based on the serotype-specific HA-L system was found to be superior in its wider and more clearly defined specificities to other previous classifications, which are based on the agglutination test. There appeared to be a correlation between serotypes and geographic origins of the strains.

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

Reference20 articles.

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2. Immunization of chickens with potassium thiocyanate (KSCN) extract of Pasteurella multocida serotype 3;Gaunt G.;Avian Dis.,1977

3. Beitrag zur Differenzierung von Haemophilus-Stammen aus Huhnern;Hinz K. H.;II. Objekttrager-Agglutinations-Test. Avian Pathol.,1973

4. Beitrag zur Differenzierung von Haemophilus-Stammen aus Huhnern. IV. Mitteilung: Untersuchungen uber die Dissoziation von Haemophilus paragallinarum;Hinz K. H.;Avian Pathol.,1976

5. Heat-stable antigenic determinants of Haemophilus paragallinarum;Hinz K. H.;Zentralbl. Veterinaermed. Reihe B,1980

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