Epidemiology of community-acquired Pseudomonas aeruginosa infections in children
I Paraskaki1, E Lebessi, N J Legakis
1Microbiology Department of P. and A. Kyriakou Children's Hospital, Athens, Greece.
Insights
Community-acquired Pseudomonas aeruginosa infections in children are most common in chronic otitis media. Fortunately, these pediatric Pseudomonas aeruginosa strains show high susceptibility to most antipseudomonadal antibiotics, suggesting effective treatment options.
Area of Science:
- Pediatric Infectious Diseases
- Bacteriology
- Epidemiology
Background:
- Community-acquired Pseudomonas aeruginosa infections pose a significant challenge in pediatric healthcare.
- Understanding the epidemiology and antimicrobial susceptibility patterns is crucial for effective treatment.
Purpose of the Study:
- To evaluate the epidemiology of community-acquired Pseudomonas aeruginosa infections in children.
- To determine the common types of infections and prevalent serogroups.
- To assess the antimicrobial susceptibility of isolated strains.
Main Methods:
- Cultured 6,859 clinical samples from children with suspected infections over one year.
- Identified Pseudomonas aeruginosa isolates and determined their O serogroups.
- Tested susceptibility to various antipseudomonadal antibiotics.
Main Results:
- Pseudomonas aeruginosa was isolated from 218 children, with chronic suppurative otitis media being the most frequent infection (76.3%).
- Common serogroups included O1, O6, and O11, with nontypable strains predominating in otitis media.
- Exceptional susceptibility rates were observed for antibiotics like ceftazidime (99.6%), ciprofloxacin (99.1%), tobramycin, imipenem, and amikacin (100%).
Conclusions:
- Community-acquired Pseudomonas aeruginosa infections in children predominantly affect the ear, particularly chronic otitis media.
- The high susceptibility of these pediatric isolates to a broad spectrum of antipseudomonadal agents indicates favorable treatment outcomes.
Abstract:
The epidemiology of community-acquired Pseudomonas aeruginosa infections in children during a one-year period (January through December 1993) was evaluated. A total of 6,859 clinical samples, each one representing a separate individual with suspected infection, were cultured. Pseudomonas aeruginosa was isolated from 218 children with various infections occurring in the following order of frequency: chronic suppurative otitis media, 76.3%; appendicitis/peritonitis, 10.3%; osteomyelitis, 8.9%; skin or soft tissue infection, 6.3%; acute conjunctivitis, 3.0%; and urinary tract infection, 0.1%. A variety of O serogroups were identified: O1 (15.2%), O6 (14.7%), O11 (12.4%), O10 (11.5%), O3 (10.6%), O5 (5.1%), and O9 (4.6%). Other serogroups and nontypable strains were recovered at a frequency of 11.2% and 14.7%, respectively. Nontypable strains predominated in chronic otitis media (18.9%), while serogroups O1 (18.3%), O6 (17.5%), and O11 (17.5%) were recovered most frequently among the typable isolates. Susceptibility of Pseudomonas aeruginosa to antipseudomonadal agents was extremely high. The rate of susceptibility to ceftazidime was 99.6%, to azlocillin 98.6%, to piperacillin 98.2%, to aztreonam 97.3%, to gentamicin and netilmicin 97.7%, and to ciprofloxacin 99.1%. All isolates were susceptible to tobramycin, imipenem, and amikacin. The results might suggest that community-acquired Pseudomonas aeruginosa infections in children can be treated successfully with any antipseudomonadal antibiotic.
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