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Echovirus 30, Jiangsu Province, China

Yan Na Zhao1, Qing Wu Jiang, Ren Jie Jiang

  • 1Fudan University, Shanghai, China.

Emerging Infectious Diseases
|April 15, 2005
PubMed

Insights

A large outbreak of aseptic meningitis in China, primarily affecting children, was caused by a distinct lineage of echovirus 30. This finding identifies a new viral strain responsible for the widespread pediatric illness.

Area of Science:

  • Virology
  • Epidemiology
  • Public Health

Background:

  • Aseptic meningitis outbreaks pose significant public health challenges, particularly in pediatric populations.
  • Identifying the specific etiologic agent is crucial for effective outbreak control and prevention strategies.

Purpose of the Study:

  • To identify the causative agent of a large aseptic meningitis outbreak in Jiangsu Province, China.
  • To characterize the genetic features of the identified viral isolates.

Main Methods:

  • Cell culture and cytopathic effect observation on MRC-5 cells.
  • Enterovirus-specific reverse transcriptase-polymerase chain reaction (RT-PCR).
  • Neutralization assays and sequencing of the viral capsid protein VP1 gene.

Main Results:

  • Sixty-six cerebrospinal fluid specimens were analyzed, with 18 showing characteristic enterovirus cytopathic effects.
  • Molecular and sequence analyses identified the causative agent as echovirus 30 (FDJS03 isolates).
  • Phylogenetic analysis revealed a distinct lineage of echovirus 30, with at least 10% nucleotide sequence difference in VP1 compared to global strains.

Conclusions:

  • A novel lineage of echovirus 30 was identified as the probable cause of the 2003 aseptic meningitis outbreak in Jiangsu Province.
  • This discovery highlights the emergence of distinct viral strains and their potential impact on public health.
  • Further research into the evolution and characteristics of this echovirus 30 lineage is warranted.

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