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Updated: Oct 10, 2026

Assessing Respiratory Immune Responses to Haemophilus Influenzae
Published on: June 29, 2021
Longitudinal outcomes of Haemophilus influenzae meningitis in school-age children
H G Taylor1, C Schatschneider, N M Minich
1Department of Pediatrics, Case Western Reserve University and Rainbow Babies & Children's Hospital, Cleveland, Ohio 44106-6038, USA. hgt2@po.cwru.edu
Insights
Children surviving Haemophilus influenzae Type b meningitis may experience long-term neurodevelopmental issues. Early brain insults increase the risk for later-emerging sequelae in these survivors.
Area of Science:
- Pediatric Neurology
- Infectious Diseases
- Neurodevelopmental Disorders
Background:
- Haemophilus influenzae Type b meningitis can cause significant long-term health problems in children.
- Previous research indicated neuropsychological, achievement, and behavioral deficits in survivors with acute-phase neurologic complications.
Purpose of the Study:
- To investigate the long-term outcomes of Haemophilus influenzae Type b meningitis survivors.
- To examine age-related influences on disease sequelae in school-aged survivors.
Main Methods:
- A cohort of school-age survivors of Haemophilus influenzae Type b meningitis was reassessed 1 and 2 years after an initial evaluation.
- Children were divided into affected (with neurologic complications) and unaffected groups.
- Growth-curve modeling was used to analyze outcomes.
Main Results:
- The affected group demonstrated poorer outcomes and less improvement over time compared to the unaffected group.
- Later age at assessment and illness correlated with greater differences between groups in some outcomes.
- Children with early, diffuse brain insults faced a higher risk for later-emerging sequelae.
Conclusions:
- Children with neurologic complications from Haemophilus influenzae Type b meningitis are at risk for persistent and potentially emerging neurodevelopmental issues.
- Age at illness and assessment can influence the manifestation and severity of long-term sequelae.
- Early brain insults from meningitis pose a significant risk for later-emerging sequelae in survivors.
Abstract:
The purpose of this study was to investigate long-term outcomes of Haemophilus influenzae Type b meningitis in a cohort of school-age survivors. Findings from an initial assessment at mean age 10 years revealed neuropsychological, achievement, and behavioral sequelae in the children with neurologic complications during the acute-phase illness (H. Taylor, C. Schatschneider, & D. Rich, 1992). Here, the cohort was reassessed 1 and 2 years after the initial evaluation to investigate age-related influences on disease sequelae. After excluding children with hearing loss, the sample was divided into 2 groups: an affected group of 39 children with acute-phase neurologic complications and an unaffected group of 73 children without these complications. Growth-curve modeling showed poorer outcomes at the final assessment and less rapid improvement at follow-up for the affected group. Later age at assessment and later age at illness were associated with larger group differences in some outcomes. Results suggest that children with diffuse early brain insults are at risk for later-emerging sequelae.
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