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Published on: October 29, 2014
Aseptic meningitis in infants < 2 years of age: diagnosis and etiology
L E Berlin1, M L Rorabaugh, F Heldrich
1Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland.
Abstract:
Standard virologic methods were used to characterize the relative contribution of each of the enterovirus classes to the etiology of aseptic meningitis during a prospective study of this disease among children < 24 months old. Viruses were isolated in cell culture from 164 (60%) of 274 cases identified over 5 years and in newborn mice from only 2 of 104 remaining cell culture-negative cases. Serologic tests identified the viral pathogen in 3 additional cases. The group B coxsackieviruses and the echoviruses were implicated in 156 (92%) of the 169 laboratory-diagnosed cases. Forty-eight percent of all diagnosed cases were due to group B coxsackievirus serotypes 2, 4, and 5; 78% of all cases were attributable to only 8 of the 67 known enterovirus serotypes. Polioviruses were the only viruses isolated from 7 children, including a cerebrospinal fluid isolate from 1 child and a urine isolate from another. Disease was attributable to the group A coxsackie-viruses for only 3 cases.
Insights
Group B coxsackieviruses and echoviruses are the primary causes of aseptic meningitis in young children. A small number of enterovirus serotypes are responsible for the majority of these infections.
Area of Science:
- Pediatric Infectious Diseases
- Virology
- Epidemiology
Background:
- Aseptic meningitis is a significant cause of illness in infants and young children.
- Enteroviruses are a common cause of viral meningitis, but their specific contributions vary.
- Understanding the etiological agents is crucial for diagnosis and prevention.
Purpose of the Study:
- To determine the relative contribution of different enterovirus classes to aseptic meningitis in children under 24 months old.
- To identify specific enterovirus serotypes most frequently associated with aseptic meningitis in this age group.
Main Methods:
- Prospective study of aseptic meningitis cases in children < 24 months old.
- Virus isolation using cell culture and newborn mice.
- Serologic tests for viral pathogen identification.
Main Results:
- Enteroviruses were identified in 60% of 274 cases.
- Group B coxsackieviruses and echoviruses accounted for 92% of laboratory-diagnosed cases.
- Eight specific enterovirus serotypes were responsible for 78% of all cases, with serotypes B2, B4, and B5 being most common.
Conclusions:
- Group B coxsackieviruses and echoviruses are the predominant enteroviruses causing aseptic meningitis in young children.
- A limited number of enterovirus serotypes are responsible for the majority of infections, highlighting potential targets for surveillance and intervention.
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