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Published on: February 23, 2014
Childhood invasive pneumococcal disease: a hospital-based study from Malaysia
Li Han Lim1, Way Seah Lee, Navaratnam Parasakthi
1Department of Paediatrics, University of Malaya Medical Centre, Kuala Lumpur, Malaysia.
Insights
Invasive pneumococcal disease (IPD) significantly impacts young Malaysian children, often caused by penicillin-non-susceptible Streptococcus pneumoniae strains. Further serotype data is crucial for effective immunization strategies in Malaysia.
Area of Science:
- Pediatrics
- Infectious Diseases
- Microbiology
Background:
- A new conjugate vaccine for Streptococcus pneumoniae has been introduced in Malaysia.
- Information on invasive pneumococcal disease (IPD) in Malaysian children is limited.
- This study reviews childhood IPD cases at a Malaysian tertiary care center.
Purpose of the Study:
- To describe the characteristics and outcomes of childhood IPD in Malaysia.
- To identify the prevalence of penicillin-non-susceptible Streptococcus pneumoniae strains.
- To inform the potential impact of pneumococcal immunization in Malaysia.
Main Methods:
- Retrospective chart review of children under 14 years with IPD.
- Study period: May 1999 to August 2004 (5 years, 4 months).
- Cases identified from the Department of Medical Microbiology records at University of Malaya Medical Centre.
Main Results:
- 50 children diagnosed with IPD; median age 1.1 years, 76% under 2 years.
- Common infections: pneumonia, meningitis, bacteraemia; 24% experienced complications like seizures and hearing loss.
- No deaths reported; 62% of isolates were penicillin-non-susceptible.
Conclusions:
- IPD causes significant morbidity in young Malaysian children.
- Penicillin-non-susceptible strains are prevalent.
- Serotype information is needed to evaluate the effectiveness of current and future immunization programs against Streptococcus pneumoniae in Malaysia.
Aim:
New conjugate vaccine for Streptococcus pneumoniae has been introduced in Malaysia recently. Information on infection due to S. pneumoniae in Malaysian children is scarce. We conducted a retrospective chart review of childhood invasive pneumococcal disease (IPD) presented to a single centre in Malaysia.
Methods:
A retrospective review of 5 years and 4 months of all cases of IPD in children younger than 14 years of age (May 1999-August 2004) seen at the University of Malaya Medical Centre (UMMC), Kuala Lumpur, was conducted. Cases were identified from the record of Department of Medical Microbiology, UMMC.
Results:
IPD was identified in 50 children (median age 1.1 years, range 2 weeks-14 years) during the study period. Seventy-six per cent of the cases were younger than 2 years of age. Pattern of infections noted include definite pneumonia (n = 8), probable pneumonia (n = 33), meningitis (n = 4), bacteraemia without focus (n = 4) and septic arthritis (n = 1 each). Pre-morbid diseases were present in 28% of all cases. Complications (n = 12, 24%) due to IPD were seizures (n = 5), pleural effusion/empyema (n = 4), cerebral palsy (n = 2) and deafness (n = 1). No deaths were attributed to IPD. Sixty-two per cent of the pneumococcal isolates were penicillin non-susceptible and were detected throughout the study period.
Conclusions:
IPD is associated with high morbidity, particularly among young children. Majority of the isolates were penicillin-non-susceptible strains. Additional information on the serotype of S. pneumoniae isolated is necessary to assess the potential impact of immunisation on preventing pneumococcal infection in Malaysia.
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