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J Clin Microbiol. 1988 July; 26(7): 1373-1377

Immunoblot analysis of humoral immune responses following infection with Bordetella pertussis or immunization with diphtheria-tetanus-pertussis vaccine.

Center for Infectious Diseases, Centers for Disease Control, Atlanta, Georgia 30333.

ABSTRACT

To help develop better diagnostic tests for pertussis, we examined the serologic response to whole-cell proteins of Bordetella pertussis after natural infection or vaccination with diphtheria-tetanus-pertussis vaccine. Serum specimens collected during a pertussis outbreak investigation and from uninfected persons were used in Western blot (immunoblot) analyses to determine the presence of immunoglobulin G (IgG) and IgA antibodies to specific B. pertussis proteins. IgG antibodies to proteins of molecular masses 220 and 210 kilodaltons (kDa) were detected in 14 of 18 serum samples obtained from patients with culture-confirmed pertussis greater than or equal to 40 days after the onset of coughing. IgA antibodies were detected in 15 of the 18 samples. Of 19 serum samples obtained from patients who had not been ill with pertussis, 6 contained IgG antibodies to these proteins and 1 contained IgA antibodies. The two proteins bound antiserum specific for filamentous hemagglutinin and comigrated with purified filamentous hemagglutinin. IgG antibodies to two additional protein bands of molecular masses 84 and 75 kDa were associated with previous vaccination. Antibody to the 84-kDa protein was detected in 15 of 17 vaccinated, never-infected persons, and antibody to the 75-kDa protein was detected in 16 of the 17. None of 11 nonvaccinated, never-infected persons tested had antibodies to either protein. All seven fully vaccinated persons with culture-documented infection had antibodies to both proteins. Antibodies to the 84-kDa protein were detected in 6 of 22 nonvaccinated and infected persons, and antibodies to the 75-kDa protein were detected in 8 of the 22. Use of Western blot analysis in this study allowed us to distinguish antibody responses to infection and immunization.