Antigenic scheme of Citrobacter koseri

Area of Science:

• Microbiology
• Bacteriology
• Immunology

Background:

• Citrobacter koseri is an opportunistic pathogen.
• Accurate identification and classification of bacterial strains are crucial for epidemiological studies and clinical diagnostics.
• Existing antigenic schemes may not fully capture the diversity within Citrobacter koseri.

Purpose of the Study:

• To propose a comprehensive antigenic scheme for Citrobacter koseri.
• To characterize the somatic and flagellar antigens of Citrobacter koseri.
• To determine the serotype diversity within a collection of Citrobacter koseri isolates.

Main Methods:

• Determination of 17 somatic antigens.
• Determination of 9 flagellar antigens, including specific (a-g) and nonspecific (1, 2) phases.
• Serotyping of 680 Citrobacter koseri cultures.

Main Results:

• A proposed antigenic scheme based on 17 somatic and 9 flagellar antigens.
• Identification of 48 distinct serotypes among the 680 examined cultures.
• Characterization of specific and nonspecific flagellar antigens.

Conclusions:

• The proposed antigenic scheme provides a robust method for classifying Citrobacter koseri.
• The identified serotypes highlight the antigenic diversity within this species.
• This scheme can aid in future epidemiological investigations and strain differentiation.