The complete mitochondrial genome of Wellcomia compar (Spirurina: Oxyuridae) and its genome characterization and phylogenetic analysis.

Wellcomia compar (Spirurina: Oxyuridae) is a pinworm that infects wild and captive porcupines. Despite clear records of its morphological structure, its genetics, systematics, and biology are poorly understood. This study aimed to determine the complete mitochondrial (mt) genome of W. compar and reconstruct its phylogenetic relationship with other nematodes. We sequenced the complete mt genome of W. comparand conducted phylogenetic analyses using concatenated coding sequences of 12 protein-coding genes (PCGs) by maximum likelihood and Bayesian inference. The complete mt genome is 14,373 bp in size and comprises 36 genes, including 12 protein-coding, two rRNA and 22 tRNA genes. Apart from 28 intergenic regions, one non-coding region and one overlapping region also occur. A comparison of the gene arrangements of Oxyuridomorpha revealed relatively similar features in W. compar and Wellcomia siamensis. Phylogenetic analysis also showed that W. compar and W. siamensis formed a sister group. In Oxyuridomorpha the genetic distance between W. compar and W. siamensis was 0.0805. This study reports, for the first time, the complete W. compar mt genome sequence obtained from Chinese porcupines. It provides genetic markers for investigating the taxonomy, population genetics, and phylogenetics of pinworms from different hosts and has implications for the diagnosis, prevention, and control of parasitic diseases in porcupines and other animals.

[Surveillance of 494 viral encephalitis cases in Baoji Municipal during 2005-2007].

OBJECTIVE: To understand the impact of surveillance system of viral encephalitis during 2005-2007 in Baoji city of Shaanxi province, to find epidemiological characteristic, control strategies and measurement to Japanese Encephalitis (JE). METHODS: Establishing the monitoring system of viral encephalitis, special monitoring of viral encephalitis cases was analyzed statistically by Epi data and Excel software. RESULTS: The seasonal trend of viral encephalitis was identical with that of JE, but the age of the incidence was different. Rate of missed diagnosis was 23.76%, squcalac cases was 5.5 times of the regular reported cases. The actual mortality was 7 times of the reported cases after 90 days and 180 days follow-up visit. CONCLUSIONS: Viral encephalitis monitoring and JE follow-up should be conducted in epidemic season so as to improve the accuracy of report and diagnosis of JE.