1887

Abstract

Summary

Agglutination tests showed that 5 cultures of , strain no. 18/323, which are used in Britain to assess the protective value of whoopingcough vaccine by mouse-protection tests, are not serologically identical.

“Monotypic” antisera used for the typing of Bord. pertussis by slideagglutination were found not to be serologically “pure”. A number of sera supposed to contain antibodies for factor 1 only proved to contain antibodies for a variety of other antigens, including factors 2 and 3.

Several cultures in which only factor 1 was detected by slide agglutination were used as vaccines in rabbits. The resulting antisera contained other antibodies, and in some cases large amounts of antibody for factor 2 were detected. Individual rabbits varied considerably in the relative amounts of agglutinin for factors 1, 2 and 3 produced as a result of vaccination with the same bacterial suspension.

The implications of these findings were examined in relation to the claim that immunity to whooping-cough is influenced by the serological type of the vaccine strain of .

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/content/journal/jmm/10.1099/00222615-1-2-169
1968-11-01
2019-10-21
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