Experimental Intraperitoneal Infection of Piglets

Area of Science:

• Veterinary Microbiology
• Animal Pathology
• Infectious Diseases

Background:

• Streptococcus suis is a significant swine pathogen causing severe diseases in weaned piglets, including arthritis, meningitis, and septicemia.
• Various infection routes (intravenous, intramuscular, intraperitoneal, intranasal) have been used to study S. suis pathogenicity and vaccine efficacy.
• The choice of infection model critically influences study outcomes and the interpretation of results.

Purpose of the Study:

• To describe and validate an intraperitoneal infection method for Streptococcus suis in weaned piglets.
• To establish a reliable, consistent, and reproducible animal model for evaluating vaccine protection against systemic S. suis infection.

Main Methods:

• Development and application of an intraperitoneal inoculation technique in weaned piglets.
• Utilizing this model to assess vaccine efficacy against systemic bacterial infection caused by S. suis.

Main Results:

• The intraperitoneal route provides a reliable, consistent, and reproducible method for infecting piglets with S. suis.
• This model is suitable for evaluating the protective efficacy of vaccines against systemic S. suis infections.

Conclusions:

• The described intraperitoneal infection method serves as a valuable animal model for Streptococcus suis research.
• This model facilitates robust assessment of vaccine-induced protection against systemic bacterial disease in swine.