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

Pediatrics
|August 31, 2012
PubMed

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.
Abstract

Related Concept Videos

Encephalitis l: Introduction01:19

Encephalitis l: Introduction

Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
Influenza01:27

Influenza

Influenza is an acute, highly communicable viral disease that affects the respiratory tract and is responsible for seasonal epidemics worldwide. Influenza A is the most prevalent type associated with widespread outbreaks and is subtyped based on two surface glycoproteins: hemagglutinin (H) and neuraminidase (N), as in H1N1. These glycoproteins are essential for viral infectivity, transmission, and immune recognition. Transmission occurs primarily through respiratory droplets and contaminated...
Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...
Viral Meningitis01:18

Viral Meningitis

Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
Arboviral Encephalitis01:25

Arboviral Encephalitis

Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...