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Updated: Jul 6, 2026

Bacterial Artificial Chromosomes: A Functional Genomics Tool for the Study of Positive-strand RNA Viruses
Published on: December 29, 2015
[Molecular-biological identification of pathogens which caused an outbreak of viral encephalitis in Jinan area]
Yan-zhen Wan1, Ying-ying Yue, Peng Li
1Department of Microbiology, Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan 250062, China.
Objective:
To investigate the etiology of the outbreak of viral encephalitis in Jinan area in 2003.
Methods:
Virus-specific nucleic acid fragments were amplified by random PCR and RT-PCR using specific primers to enterovirus. After sequencing, the gene sequence was handled by the program BLAST for homologous analysis and the software Clustal W 1.82 for multiple sequence alignment to identify the etiology and its genotype.
Results:
Five strains were isolated from clinical specimens. A gene fragment for one strain was acquired using random PCR, which was highly homologous to enterovirus. Then, the 5' non-translated region and partial VP1 region were amplified and sequenced. The five isolated strains were all identified as Coxsackievirus B5, and what was more, they were most homologous to the strain isolated during the outbreak of aseptic meningitis and encephalitis in Zhejiang province from 2002 to 2004.
Conclusion:
Coxsackievirus B5 is closely associated with the outbreak of viral encephalitis in Jinan area in 2003. It is an important etiology but other viruses may also played a role which remains to be clarified.
Insights
Coxsackievirus B5 caused the 2003 viral encephalitis outbreak in Jinan. This study identified the virus strain, linking it to similar outbreaks in Zhejiang province.
Area of Science:
- Virology
- Molecular Biology
- Epidemiology
Context:
- An outbreak of viral encephalitis occurred in Jinan in 2003.
- Enterovirus infections can cause severe neurological disease.
Purpose:
- To determine the causative agent of the 2003 viral encephalitis outbreak in Jinan.
- To identify the specific genotype of the identified virus.
Summary:
- Five strains of Coxsackievirus B5 were isolated from clinical samples during the Jinan outbreak.
- Genetic analysis confirmed the virus as Coxsackievirus B5, highly homologous to strains from Zhejiang province (2002-2004).
- Techniques used included random PCR, RT-PCR, sequencing, BLAST analysis, and Clustal W alignment.
Impact:
- Identifies Coxsackievirus B5 as a significant cause of the Jinan encephalitis outbreak.
- Provides crucial etiological data for understanding enterovirus-related neurological diseases.
- Highlights the potential for cross-regional viral transmission and outbreaks.
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