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Epidemiological study of Pseudomonas aeruginosa isolated from clinical specimens
S Srifuengfung1, W Thanagrumetha
1Department of Microbiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.
Abstract:
The epidemiology of Pseudomonas aeruginosa infection was studied in Siriraj Hospital. During April 1989-June 1990, P. aeruginosa 436 strains were isolated from clinical specimens of 260 patients, ie blood (19 strains), pus (192 strains), sputum (159 strains) and urine (66 strains). By using a combination of serogroups and pyocin types as epidemiological markers, it was found that there were 10 serogroups and 8 pyocin types which can be differentiated into 33 serogroup/pyocin types or patterns. The most common pattern was E 211111 (26.3%) followed by B 121614 (24.5%), G 373112 (13%) and L 888888 (7.1%), respectively.
Insights
This study investigated Pseudomonas aeruginosa infections in Siriraj Hospital, identifying common serogroup/pyocin patterns. The most frequent Pseudomonas aeruginosa patterns were E 211111 and B 121614.
Area of Science:
- Medical Microbiology
- Infectious Diseases Epidemiology
Background:
- Pseudomonas aeruginosa is a significant opportunistic pathogen.
- Understanding its epidemiology is crucial for infection control.
Purpose of the Study:
- To investigate the epidemiology of Pseudomonas aeruginosa infections.
- To identify common serogroup and pyocin types in clinical isolates.
Main Methods:
- Collected 436 P. aeruginosa strains from clinical specimens (blood, pus, sputum, urine) between April 1989 and June 1990.
- Utilized a combination of serogroups and pyocin typing for epidemiological analysis.
- Differentiated strains into 33 distinct serogroup/pyocin patterns.
Main Results:
- Identified 10 serogroups and 8 pyocin types.
- The most prevalent serogroup/pyocin patterns were E 211111 (26.3%) and B 121614 (24.5%).
- Other significant patterns included G 373112 (13%) and L 888888 (7.1%).
Conclusions:
- Established key epidemiological markers for P. aeruginosa in the study setting.
- Provided baseline data on prevalent strains for future surveillance and control efforts.