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Specific antibody response to Pasteurella multocida.

D Choudat1, G Paul, C Legoff

  • 1Department of Lung Medicine, Cochin Hospital, Paris, France.

Scandinavian Journal of Infectious Diseases
|January 1, 1987
PubMed
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Serological tests effectively detect Pasteurella multocida infections by identifying specific antibodies. Antibody levels indicate active infection and decrease after successful treatment, aiding diagnosis.

Area of Science:

  • Veterinary Medicine
  • Infectious Diseases
  • Immunology

Background:

  • Pasteurella multocida is a bacterium causing various infections in humans, often linked to animal contact.
  • Accurate diagnostic methods are crucial for timely and effective treatment of P. multocida infections.

Purpose of the Study:

  • To evaluate the efficacy of serological methods for diagnosing Pasteurella multocida infections.
  • To correlate antibody titers with active infection and treatment outcomes.

Main Methods:

  • Serological analysis of six patients with confirmed Pasteurella multocida infections.
  • Determination of specific antibodies against capsular and somatic antigens using indirect hemagglutination and agglutination tests.
  • Serotyping of P. multocida strains (A3 and A7).

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Main Results:

  • Antibodies were specific to the isolated P. multocida strains, with high titers against capsular (20-2,560) and somatic (5-640) antigens during active infection.
  • Antibody titers decreased significantly after successful treatment, with somatic antibodies nearly disappearing.
  • No cross-reactivity was observed with other bacterial species.

Conclusions:

  • Serological testing demonstrates high sensitivity for diagnosing active P. multocida infections.
  • Declining antibody titers post-treatment confirm the effectiveness of healing.
  • Serological diagnosis offers a valuable alternative to culture-based methods, especially for difficult-to-diagnose cases.