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Updated: Jul 22, 2026

Intra-tracheal Administration of Haemophilus influenzae in Mouse Models to Study Airway Inflammation
Published on: March 2, 2016
Haemophilus influenzae meningitis in Malaysia
I H Hussain1, A Sofiah, L C Ong
1Paediatric Institute, Hospital Kuala Lumpur, Malaysia.
Objective:
To determine the pattern of postneonatal childhood meningitis in Malaysia.
Methods:
Retrospective cross-sectional study involving five pediatric departments in Malaysia.
Results:
There were 435 cases of clinical meningitis admitted to the five centers. More than 90% of the patients were <5 years old, and one-half were <6 months of age. The estimated overall incidence of childhood meningitis in the first 5 years of life was 76.7 per 100000 per year. However, of the 435 cases only 71 (16.3%) fulfilled laboratory diagnostic criteria and in only 58 of these was an organism isolated. Nearly one-half (48%) of all bacteriologically proved cases were caused by Haemophilus influenzae type b (Hib). The mortality rate was 12.5% and 21 patients (30%) suffered neurologic sequelae.
Conclusions:
More than one-half of all cases of culture-positive childhood bacterial meningitis were caused by Hib, although successful isolation of a pathogen occurred in only a small proportion of cases. For this reason the true incidence of Hib meningitis in Malaysia remains unknown. These findings are consistent with previous studies in Malaysia.
Insights
Childhood bacterial meningitis in Malaysia is often caused by Haemophilus influenzae type b (Hib), despite low pathogen isolation rates. This study highlights the need for better diagnostic methods to understand Hib meningitis incidence.
Area of Science:
- Pediatrics
- Infectious Diseases
- Epidemiology
Background:
- Childhood meningitis poses a significant health burden globally.
- Accurate etiological diagnosis is crucial for effective treatment and prevention strategies.
Purpose of the Study:
- To investigate the epidemiological patterns of postneonatal childhood meningitis in Malaysia.
- To identify causative agents and assess outcomes in pediatric meningitis cases.
Main Methods:
- Retrospective cross-sectional study design.
- Data collected from five pediatric departments across Malaysia.
- Analysis of clinical and laboratory data for meningitis cases.
Main Results:
- 435 clinical meningitis cases were identified, predominantly in children under five years old.
- Only 16.3% of cases met laboratory diagnostic criteria; pathogen isolation was achieved in 58 cases.
- Haemophilus influenzae type b (Hib) was identified in 48% of bacteriologically confirmed cases, with a 12.5% mortality rate and 30% neurologic sequelae.
Conclusions:
- Haemophilus influenzae type b (Hib) is a major cause of culture-positive bacterial meningitis in Malaysian children.
- Low pathogen isolation rates hinder accurate assessment of Hib meningitis incidence.
- Findings align with previous epidemiological studies on childhood meningitis in Malaysia.
Related Concept Videos
Bacterial Meningitis
Viral Meningitis
Influenza
Cryptococcal Meningitis
Bacterial Meningitis I: Introduction
Bacterial Meningitis II: Pathophysiology

