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[Prevalence of Pseudomonas aeruginosa O serogroups]
Abstract:
The serological typing of 708 P. aeruginosa strains made it possible to determine serogroups in 97.9% of cultures. Serogroups O2 and O6 were the most prevalent (33.8% and 2.5% respectively); serotypes O1, O3 and O11 also occurred rather frequently (about 10%); O4, O7 and O9 were rare (3-8%), serotypes O10 and O12, very rare (less than 1%). The prevalence of P. aeruginosa strains O2 and O6 among the clinical strains was shown over a period of 10 years, serogroup O2 always playing the leading role. In serogroups, the predominance of strains with a definite combination of partial antigen was established; strains with the antigenic structure not described in the International Scheme of the Structure of O-Antigens were detected.
Insights
Serological typing identified prevalent Pseudomonas aeruginosa serogroups O2 and O6 in 708 strains. Serogroup O2 dominated clinical isolates over a decade, with unique antigenic structures also identified.
Area of Science:
- Clinical microbiology
- Bacteriology
- Immunology
Background:
- Pseudomonas aeruginosa is an opportunistic pathogen.
- Serological typing is crucial for understanding bacterial epidemiology.
- Previous studies highlight the importance of specific serogroups.
Purpose of the Study:
- To determine the prevalence of different serogroups among 708 Pseudomonas aeruginosa strains.
- To analyze the long-term prevalence of key serogroups in clinical settings.
- To identify novel antigenic structures within P. aeruginosa.
Main Methods:
- Serological typing of 708 P. aeruginosa isolates.
- Analysis of serogroup distribution.
- Longitudinal study of clinical isolates over 10 years.
Main Results:
- Serological typing successfully classified 97.9% of strains.
- Serogroups O2 (33.8%) and O6 (2.5%) were most prevalent.
- Serogroup O2 consistently predominated in clinical isolates over 10 years.
- Rare serotypes (O4, O7, O9, O10, O12) and novel antigenic structures were also detected.
Conclusions:
- Serogroup O2 is the most common P. aeruginosa serogroup, particularly in clinical environments.
- The study identified specific antigenic structures, contributing to P. aeruginosa classification.
- Understanding serogroup prevalence is vital for infection control and diagnostics.