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Published on: April 14, 2011
Neurologic disorders among pediatric deaths associated with the 2009 pandemic influenza
Lenee Blanton1, Georgina Peacock, Chad Cox
1Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA. lblanton@cdc.gov
Insights
Influenza A (H1N1)pdm09 virus (pH1N1) deaths in children were often linked to underlying neurologic disorders. These children experienced longer illnesses and more hospital deaths, underscoring the need for early intervention and vaccination.
Area of Science:
- Pediatric Infectious Diseases
- Neurology
- Public Health
Background:
- Influenza A (H1N1)pdm09 virus (pH1N1) poses a significant risk to children.
- Underlying medical conditions, particularly neurologic disorders, can increase the severity of influenza infections.
- Understanding risk factors and outcomes in pediatric influenza deaths is crucial for public health strategies.
Purpose of the Study:
- To describe deaths associated with influenza A (H1N1)pdm09 virus (pH1N1) in children with underlying neurologic disorders.
- To compare the characteristics and clinical course of pH1N1-associated deaths in children with and without neurologic conditions.
Main Methods:
- Retrospective analysis of pediatric deaths reported to the Centers for Disease Control and Prevention (CDC).
- Comparison of demographic data, clinical presentation, and death location between children with and without underlying neurologic disorders.
- Statistical analysis to identify significant differences between the groups.
Main Results:
- Neurologic disorders were present in 64% of pediatric pH1N1 deaths with underlying conditions.
- Children with neurologic disorders were older, had longer illness durations, and were more likely to die in hospitals.
- Pulmonary disorders were common co-morbidities in children with neurologic conditions.
Conclusions:
- Neurologic disorders are a frequent underlying condition in pediatric pH1N1 deaths.
- Children with neurologic disorders face a higher risk of severe influenza outcomes.
- Influenza vaccination and prompt, aggressive treatment are recommended for children with neurologic disorders presenting with influenza-like illness.
Objective:
The goal of this study was to describe reported influenza A (H1N1)pdm09 virus (pH1N1)-associated deaths in children with underlying neurologic disorders.
Methods:
The study compared demographic characteristics, clinical course, and location of death of pH1N1-associated deaths among children with and without underlying neurologic disorders reported to the Centers for Disease Control and Prevention.
Results:
Of 336 pH1N1-associated pediatric deaths with information on underlying conditions, 227 (68%) children had at least 1 underlying condition that conferred an increased risk of complications of influenza. Neurologic disorders were most frequently reported (146 of 227 [64%]), and, of those disorders, neurodevelopmental disorders such as cerebral palsy and intellectual disability were most common. Children with neurologic disorders were older (P = .02), had a significantly longer duration of illness from onset to death (P < .01), and were more likely to die in the hospital versus at home or in the emergency department (P < .01) compared with children without underlying medical conditions. Many children with neurologic disorders had additional risk factors for influenza-related complications, especially pulmonary disorders (48%). Children without underlying conditions were significantly more likely to have a positive result from a sterile-site bacterial culture than were those with an underlying neurologic disorder (P < .01).
Conclusions:
Neurologic disorders were reported in nearly two-thirds of pH1N1-associated pediatric deaths with an underlying medical condition. Because of the potential for severe outcomes, children with underlying neurologic disorders should receive influenza vaccine and be treated early and aggressively if they develop influenza-like illness.
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