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Pediatric Neurologic Complications Associated With Influenza A H1N1
Yuval E Landau1, Galia Grisaru-Soen, Shimon Reif
1Pediatric Neurology Unit, Dana Children's Hospital, Tel Aviv Sourasky Medical Center, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. yuval.landau@childrens.harvard.edu
Insights
Influenza A H1N1 infection in children can cause neurologic complications, most commonly seizures. While generally mild, these neurological effects warrant consideration during diagnosis.
Area of Science:
- Pediatrics
- Neurology
- Infectious Diseases
Background:
- Influenza is linked to various neurological complications.
- Limited data exists on neurological complications specifically from influenza A H1N1.
- This study focuses on pediatric cases of influenza A H1N1 with neurological involvement.
Purpose of the Study:
- To describe the neurological complications in children hospitalized with influenza A H1N1.
- To review the demographics and clinical characteristics of these neurological presentations.
Main Methods:
- Retrospective study of hospitalized children with laboratory-confirmed influenza A H1N1 and neurological complications.
- Data collected over a 4-month winter period.
- Review of patient demographics and clinical features of neurological presentations.
Main Results:
- 19% (14/74) of hospitalized children with influenza A H1N1 had neurological complications.
- Seizures (febrile and nonfebrile) were the most common complication (71%).
- Other complications included transverse myelitis, myositis, expressive aphasia, and syncope; most cases were mild.
Conclusions:
- Neurological complications of influenza A H1N1 in children are often mild, with seizures being most frequent.
- Influenza A H1N1 should be considered in the differential diagnosis of pediatric neurological conditions during outbreaks.
- Prompt recognition is crucial for appropriate management and to prevent potential sequelae.
Abstract:
Influenza is associated with a variety of neurologic complications. Although the epidemiologic and clinical characteristics of influenza A H1N1 were reviewed in depth, only brief descriptions of neurologic complications exist. We describe the neurologic complications of children hospitalized with influenza A H1N1 infection. We undertook a retrospective study of all hospitalized children with laboratory-confirmed influenza A H1N1 infection accompanied by neurologic complications during a 4-month winter period. Their demographics and clinical characteristics of neurologic presentations were reviewed. Fourteen of 74 children (19%) with laboratory-confirmed influenza A H1N1 infection presented with neurologic complications. Eleven (11/14, 79%) were previously healthy, and three exhibited chronic conditions. Ten (10/14, 71%) presented with seizures: six were febrile, and four were nonfebrile. Other complications included transverse myelitis, myositis, expressive aphasia, and syncope. Only the child with transverse myelitis required a course of rehabilitation. Neurologic complications associated with influenza A H1N1 in our patients were relatively mild. Seizures (febrile or nonfebrile) were the most common. However, the possibility of influenza A H1N1 infection should be borne in mind when diagnosing children with neurologic signs during the influenza A H1N1 season.
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