Selective medium for Pasteurella multocida and its use to detect oropharyngeal carriage in pig breeders

Area of Science:

• Microbiology
• Veterinary Medicine
• Public Health

Background:

• Pasteurella multocida is a significant bacterial pathogen affecting various animal species.
• Identifying and isolating P. multocida is crucial for disease control and prevention in livestock and humans.
• Current isolation methods may lack specificity or efficiency.

Purpose of the Study:

• To develop and evaluate a novel selective culture medium for the efficient isolation of Pasteurella multocida.
• To assess the prevalence of P. multocida in the oropharynges of pig breeders using the developed medium.

Main Methods:

• A selective culture medium was formulated by adding amikacin (2 mg/L), vancomycin (4 mg/L), and amphotericin B (4 mg/L) to Mueller-Hinton blood agar.
• The efficacy of the selective medium was tested for P. multocida isolation.
• The medium was used to screen 49 pig breeders for the presence of P. multocida in their oropharynges.

Main Results:

• The selective culture medium successfully isolated Pasteurella multocida.
• P. multocida was detected in the oropharynges of 19 out of 49 examined pig breeders.
• The study demonstrates the utility of the new medium in identifying carriers.

Conclusions:

• The developed selective culture medium is effective for isolating Pasteurella multocida.
• A significant proportion of pig breeders may harbor P. multocida, highlighting potential zoonotic transmission risks.
• This medium can be a valuable tool for epidemiological studies and surveillance of P. multocida.