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Published on: February 23, 2014
Host and microbiologic factors associated with mortality in Taiwanese children with invasive pneumococcal diseases,
Chih-Jung Chen1, Chia-Ling Lin, Yi-Ching Chen
1Divisions of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Children's Hospital and Chang Gung Memorial Hospital, Taoyuan, Taiwan.
Insights
Underlying conditions and penicillin resistance independently predict fatal invasive pneumococcal disease in Taiwanese children. Immunization strategies should prioritize vulnerable children and combat drug-resistant strains.
Area of Science:
- Pediatrics
- Infectious Diseases
- Microbiology
Background:
- Invasive pneumococcal disease (IPD) remains a significant cause of childhood morbidity and mortality globally.
- Host and organism factors influence IPD outcomes, necessitating continued research into predictive variables.
Purpose of the Study:
- To identify host- and organism-related factors associated with outcomes of IPD in Taiwanese children.
- To determine independent predictors of fatality in pediatric IPD cases.
Main Methods:
- Retrospective evaluation of 160 IPD episodes in 158 Taiwanese children (2001-2006).
- Analysis of clinical data, including demographics, underlying conditions, disease syndromes, and treatment.
- Univariate and multivariate logistic regression to assess factors influencing mortality.
Main Results:
- Most IPD episodes (86.2%) occurred in children under 60 months; 22.2% had underlying conditions.
- Common syndromes included pneumonia, occult bacteremia, and meningitis.
- Fatality (8.1%) was linked to younger age, underlying conditions, meningitis, and penicillin MIC ≥2 µg/mL.
- Multivariate analysis identified underlying conditions (aOR 30.5) and penicillin MIC ≥2 µg/mL (aOR 8.1) as independent predictors of death.
Conclusions:
- Underlying conditions and penicillin non-susceptibility are critical independent predictors of fatality in pediatric IPD.
- Findings underscore the importance of immunization programs, especially for disadvantaged children, and the need to address antibiotic resistance.
Abstract:
We concurrently evaluated host- and organism-related factors in determining the outcomes of 160 invasive pneumococcal diseases episodes in 158 Taiwanese children during 2001 and 2006. Most (138/160, 86.2%) episodes occurred at age less than 60 months, and an underlying condition was present in 35 (22.2%) cases. Common disease syndromes included complicated pneumonia (29.4%), uncomplicated pneumonia (29.4%), occult bacteremia (17.5%), and meningitis (14.4%). Mortality (13/160, 8.1%) was associated with age less than 24 months, underlying conditions, meningitis, cytopenia, intensive care, and penicillin MIC >or=2 microg/mL in univariate analysis. Pneumococcal serotypes, genotypes, origin of infections, and discordant therapy did not influence the outcome. Multivariate analysis determined the presence of underlying conditions (adjusted odds ratio [OR], 30.5; 95% confidence interval [CI], 4.8-193.1) and penicillin MIC >or=2 microg/mL (adjusted OR, 8.1; 95% CI, 1.4-47.3), which are the independent predictors for fatality. This finding highlighted the importance of immunization of disadvantaged children, targeting drug-resistant pneumococci.
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