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Invasive pneumococcal disease in Phramongkutklao Hospital 2004-2008: clinical data, serotype distribution and
Detchvijitr Suwanpakdee1, Rudiwilai Samakoses, Sayomporn Sirinavin
1Pediatric Infectious Disease Unit, Phramongkutklao Hospital, Bangkok, Thailand. detchvijitr@gmail.com
Objective:
To describe the clinical course, serotype distribution and antimicrobial resistance patterns of invasive pneumococcal disease (IPD) cases in a public hospital.
Material And Method:
Retrospective review of IPD cases occurring from January 2004 through December 2008 was performed. Antibiotic susceptibility testing and serotyping were performed for available isolates.
Results:
Fifty one IPD cases occurred during the study period, of which 47 had medical records available for review. The majority of cases occurred among children under 5 years of age (23.4%) and adults over 60 years of age (36.1%). Underlying diseases were identified in 72.3% of patients. Fifty-three percent of cases were associated with pneumonia, while 17% had meningitis, and 15% had isolated bacteremia. Serotype could be determined for 15 (31.9%) isolates, and 6B was most common. Based on current antibiotic susceptibility breakpoints for meningitis, 4 of the 7 available isolates from meningitis cases were penicillin resistant and one had reduced susceptibility to cefotaxime. Among non-meningitis isolates, 96.7% were penicillin susceptible and 3.3% had intermediate susceptibility to penicillin. Overall case fatality proportion was 19%.
Conclusion:
At this tertiary care hospital in Bangkok, IPD has disproportionately affected young children and the elderly. High rates of penicillin resistance among meningitis cases, the most severe form of IPD, underscore the need of appropriate treatment strategies and vaccine usage.
Insights
Invasive pneumococcal disease (IPD) disproportionately affected young children and the elderly in Bangkok. Penicillin resistance in meningitis cases highlights the need for better treatment and vaccines.
Area of Science:
- Infectious Diseases
- Microbiology
- Public Health
Background:
- Invasive pneumococcal disease (IPD) remains a significant global health concern.
- Understanding local epidemiology, including serotype distribution and antimicrobial resistance, is crucial for effective management.
Purpose of the Study:
- To characterize the clinical presentation, serotype prevalence, and antibiotic resistance of IPD cases.
- To inform local public health strategies and clinical treatment guidelines.
Main Methods:
- Retrospective analysis of IPD cases from January 2004 to December 2008.
- Serotyping and antibiotic susceptibility testing performed on available isolates.
Main Results:
- Fifty-one IPD cases identified; 47 with available records.
- Peak incidence in children under 5 and adults over 60.
- Meningitis cases showed high penicillin resistance (4/7 isolates) and reduced cefotaxime susceptibility (1/7).
- Overall case fatality rate was 19%.
Conclusions:
- IPD predominantly impacts the very young and elderly in Bangkok.
- High penicillin resistance in pneumococcal meningitis necessitates optimized treatment and vaccination strategies.
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